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1 Witt, C.M.; Brinkhaus, B.; Willich, S.N.
Akupunktur
Klinische Studien zur Wirksamkeit bei Patienten mit chronischen Schmerzen
Bundesgesundheitsblatt Gesundheitsforschung Gesundheitsschutz, 2006, 49, 736-742
Acupuncture, Arthrosis, Muscoskeletal -/Connective tissue system, Clinical research, Complementary and alternative medicine, Headache, Low back pain, Nervous system, Randomized trial, Pain, Traditional Chinese medicine, Review (CR), Chronic pain
2 Weidenhammer, W.; Linde, K.; Streng, A.; Hoppe, A.; Melchart, D.
Acupuncture for chronic low back pain in routine care
A multicenter observational study
Clin J Pain, 2007, 23, 128-135
Acupuncture, Observational trial, Muscoskeletal -/Connective tissue system, Clinical research, Complementary and alternative medicine, Low back pain, Pain, Traditional Chinese medicine, Chronic pain
3 Junnila, S.Y.T.
Long-term treatment of chronic pain with acupuncture
Part I
Acupunct Electrother Res, 1987, 12, 23-36
Acupuncture, Observational trial, Clinical research, Complementary and alternative medicine, Pain, Traditional Chinese medicine, Chronic pain
4 Junnila, S.Y.T.
Long-term treatment of chronic pain with acupuncture
Part II
Acupunct Electrother Res, 1987, 12, 125-138
Acupuncture, Observational trial, Clinical research, Complementary and alternative medicine, Pain, Traditional Chinese medicine, Chronic pain
5 Melzack, R.; Katz, J.
Auriculotherapy fails to relieve chronic pain
A controlled crossover study
JAMA, 1984, 251(8), 1041-1043
Acupuncture, Clinical research, Complementary and alternative medicine, Ear acupuncture, Randomized trial, Pain, Traditional Chinese medicine, Chronic pain
6 Patel, M.S.; Gutzwiller, F.; Paccaud, F.; Marazzi, A.
An meta-analysis of acupuncture for chronic pain
Int J Epidemiol, 1989, 18(4), 900-906
Acupuncture, Clinical research, Complementary and alternative medicine, Meta-analysis, Pain, Traditional Chinese medicine, Chronic pain
7 Yuen, R.W.M.; Vaughan, R.J.; Dyer, H.; Giles, K.E.
The response to acupuncture therapy in patients with chronic disabling pain
Med J Australia, 1976, 1, 862-865
Acupuncture, Observational trial, Clinical research, Complementary and alternative medicine, Pain, Traditional Chinese medicine, Chronic pain
8 Weidenhammer, W.; Streng, A.; Linde, K.; Hoppe, A.; Melchart, D.
Acupuncture for chronic pain within the research program of 10 German Health Insurance Funds
Basic results from an observational study
Complement Ther Med, 2007, 15(4), 238-246
Acupuncture, Observational trial, Clinical research, Complementary and alternative medicine, Pain, Traditional Chinese medicine, Chronic pain
9 Dyson-Hudson, T.A.; Kadar, P.; LaFountaine, M.; Emmons, R.; Kirshblum, S.C.; Tulsky, D.; Komaroff, E.
Acupuncture for chronic shoulder pain in persons with spinal cord injury
A small-scale clinical trial
Arch Phys Med Rehabil, 2007, 88(10), 1276-1283
Acupuncture, Muscoskeletal -/Connective tissue system, Clinical research, Complementary and alternative medicine, Nervous system, Placebo-controlled, Randomized trial, Spinal marrow, Pain, Shoulder, Traditional Chinese medicine, Chronic pain
10 Gamus, D.; Meshulam-Atzmon, V.; Pintov, S.; Jacoby, R.
The effect of acupuncture threrapy on pain perception and coping strategies
A preliminary report
J Acupunct Meridian Stud, 2008, 1(1), 51-53
Acupuncture, Observational trial, Clinical research, Complementary and alternative medicine, Psychology/psychotherapy, Pain, Traditional Chinese medicine, Chronic pain
11 Sun, Y.; Gan, T.J.
Acupuncture for the management of chronic headache
A systematic review
Anesth Analg, 2008, 107(6), 2038-2047
Acupuncture, Clinical research, Complementary and alternative medicine, Headache, Nervous system, Pain, Systematic review, Traditional Chinese medicine, Chronic pain
12 Markos, G.; Robinson, N.; Taylor-Vieira, A.
An investigation into the effects of traditional acupuncture on perceived stress and sleep/wake patterns of patients experiencing chronic pain
Eur J Integr Med, 2008, 1(Suppl.1), S16 (Abstract; Symposiumsbeitrag)
Acupuncture, Observational trial, Clinical research, Complementary and alternative medicine, Mental diseases, Sleep disorders, Pain, Stress, Traditional Chinese medicine, Chronic pain
13 Lathia, A.T.; Jung, S.M.; Chen, L.X.
Efficacy of acupuncture as a treatment for chronic shoulder pain
J Altern Complement Med, 2009, 15(6), 613-618
Acupuncture, Arthrosis, Muscoskeletal -/Connective tissue system, Clinical research, Complementary and alternative medicine, Placebo-controlled, Randomized trial, Pain, Shoulder, Traditional Chinese medicine, Chronic pain
14 El-Rakshy, M.; Clark, S.C.; Thompson, J.; Thant, M.
Effect of intraoperative electroacupuncture on postoperative pain, analgesic requirements, nausea and sedation
A randomised controlled trial
Acupunct Med, 2009, 27(1), 9-12
Acupuncture, Surgery, Electroacupuncture, Clinical research, Complementary and alternative medicine, Gastrointestinal tract, Placebo-controlled, Randomized trial, Pain, Traditional Chinese medicine, Sickness, Chronic pain
15 Lee, J.H.; Park, H.J.; Lee, H.; Shin, I.H.; Song, M.Y.
Acupuncture for chronic low back pain
Protocol for a multicenter, randomized sham-controlled trial
BMC Musculoskel Disord, 2010, 11, 118; (1-7) (Studienprotokoll)
Acupuncture, Muscoskeletal -/Connective tissue system, Clinical research, Complementary and alternative medicine, Low back pain, Placebo-controlled, Randomized trial, Pain, Traditional Chinese medicine, Chronic pain
16 White, A.; Foster, N.E.; Cummings, M.; Barlas, P.
Acupuncture treatment for chronic knee pain
A systematic review
Rheumatol, 2007, 46(3), 384-390
Acupuncture, Muscoskeletal -/Connective tissue system, Joints, Clinical research, Complementary and alternative medicine, Pain, Systematic review, Traditional Chinese medicine, Chronic pain
17 Witt, C.M.; Lüdtke, R.; Wegscheider, K.; Willich, S.N.
Physician characteristics and variation in treatment outcomes
Are better qualified and experienced physicians more successful in treating patients with chronic pain with acupuncture?
J Pain, 2010, 11(5), 431-435
Acupuncture, Clinical research, Complementary and alternative medicine, Randomized trial, Pain, Traditional Chinese medicine, Chronic pain
18 Leonard, G.; Cloutier, C.; Marchand, S.
Reduced analgesic effect of acupuncture-like TENS but not conventional TENS in opioid-treated patients
J Pain, 2011, 12(2), 213-221
Acupuncture, Electrotherapy, Clinical research, Complementary and alternative medicine, Physical therapy, Randomized trial, Pain, Transcutaneous electrical nerve stimulation (TENS), Traditional Chinese medicine, Chronic pain
19 Tugcu, V.; Tas, S.; Eren, G.; Bedirhan, B.; Karadag, S.; Tasci, A.
Effectiveness of acupuncture in patients with category IIIB chronic pelvic pain syndrome
A report of 97 patients
Pain Med, 2010, 11(4), 518-523
Acupuncture, Observational trial, Muscoskeletal -/Connective tissue system, Urinary tract, Clinical research, Complementary and alternative medicine, Pain, Traditional Chinese medicine, Pelvic girdle pain, Chronic pain
20 Söderberg, E.I.; Carlsson, J.Y.; Stener-Victorin, E.; Dahlof, C.
Subjective well-being in patients with chronic tension-type headache
Effect of acupuncture, physical training, and relaxation training
Clin J Pain, 2011, 27(5), 448-456
Acupuncture, Exercise therapy, Relaxation, Clinical research, Complementary and alternative medicine, Headache, Mind-body medicine, Nervous system, Physical therapy, Randomized trial, Pain, Traditional Chinese medicine, Chronic pain
21 Yun, M.; Shao, Y.; Zhang, Y.; He, S.; Xiong, N.; Zhang, J.; Guo, M.; Liu, D.; Luo, Y.; Guo, L.; Yan, J.
Hegu acupuncture for chronic low-back pain
A randomized controlled trial
J Altern Complement Med, 2012, 18(2), 130-136
Acupuncture, Muscoskeletal -/Connective tissue system, Clinical research, Complementary and alternative medicine, Low back pain, Randomized trial, Pain, Traditional Chinese medicine, Chronic pain
22 Mavrommatis, C.I.; Argyra, E.; Vadalouka, A.; Vasilakos, D.G.
Acupuncture as an adjunctive therapy to pharmacological treatment in patients with chronic pain due to osteoarthritis of the knee
A 3-armed, randomized, placebo-controlled trial
Pain, 2012, 153(8), 1720-1726
Acupuncture, Arthrosis, Muscoskeletal -/Connective tissue system, Clinical research, Knee arthrosis, Complementary and alternative medicine, Placebo-controlled, Randomized trial, Rheumatic diseases, Pain, Traditional Chinese medicine, Chronic pain
23 Vickers, A.J.; Cronin, A.M.; Maschino, A.C.; Lewith, G.; MacPherson, H.; Foster, N.E.; Sherman, K.J.; Witt, C.M.; Linde, K.
Acupuncture for chronic pain
Individual patient data meta-analysis
Arch Intern Med, 2012, 172(19), 1444-1453
Acupuncture, Clinical research, Complementary and alternative medicine, Meta-analysis, Pain, Traditional Chinese medicine, Chronic pain
24 Cho, Y.J.; Song, Y.K.; Cha, Y.Y.; Shin, B.C.; Shin, I.H.; Park, H.J.; Lee, H.S.; Kim, K.W.; Cho, J.H.; Chung, W.S.; Lee, J.H.; Song, M.Y.
Acupuncture for chronic low back pain
A multicenter, randomized, patient-assessor blind, sham-controlled clinical trial
Spine, 2013, 38(7), 549-557
Acupuncture, Muscoskeletal -/Connective tissue system, Clinical research, Complementary and alternative medicine, Low back pain, Placebo-controlled, Randomized trial, Pain, Traditional Chinese medicine, Chronic pain
25 Xue, C.C.; Helme, R.D.; Gibson, S.; Hogg, M.; Arnold, C.; Somogyi, A.A.; Da Costa, C.; Wang, Y.; Lu, S.C.; Zheng, Z.
Effect of electroacupuncture on opioid consumption in patients with chronic musculoskeletal pain
Protocol of a randomised controlled trial
Trials, 2012, 13, 169; (1-8) (Studienprotokoll)
Acupuncture, Muscoskeletal -/Connective tissue system, Electroacupuncture, Clinical research, Complementary and alternative medicine, Randomized trial, Pain, Traditional Chinese medicine, Chronic pain
26 Wand, B.M.; Abbaszadeh, S.; Smith, A.J.; Catley, M.J.; Moseley, G.L.
Acupuncture applied as a sensory discrimination training tool decreases movement-related pain in patients with chronic low back pain more than acupuncture alone
A randomised cross-over experiment
Brit J Sports Med, 2013, 47(17), 1085-1089
Acupuncture, Clinical research, Complementary and alternative medicine, Low back pain, Randomized trial, Pain, Traditional Chinese medicine, Chronic pain
27 Couilliot, M.F.; Darees, V.; Delahaye, G.; Ercolano, P.; Carcaillé, M.; Vytopilova, P.; Tenenbaum, B.; Vicaut, E.
Acceptability of an acupuncture intervention for geriatric chronic pain
An open pilot study
J Integr Med, 2013, 11(1), 26-31
Acupuncture, Observational trial, Muscoskeletal -/Connective tissue system, Geriatrics, Clinical research, Complementary and alternative medicine, Pain, Traditional Chinese medicine, Chronic pain
28 Witt, C.M.; Martins, F.; Willich, S.N.; Schützler, L.
Can I help you?
Physicians' expectations as predictor for treatment outcome
Eur J Pain, 2012, 16(10), 1455-1466
Acupuncture, Clinical research, Complementary and alternative medicine, Randomized trial, Pain, Traditional Chinese medicine, Chronic pain
29 Weiß, J.; Quante, S.; Xue, F.; Muche, R.; Reuss-Borst, M.
Effectiveness and acceptance of acupuncture in patients with chronic low back pain
Results of a prospective, randomized, controlled trial
J Altern Complement Med, 2013, 19(12), 935-941
Acupuncture, Muscoskeletal -/Connective tissue system, Clinical research, Complementary and alternative medicine, Low back pain, Randomized trial, Rehabilitation, Pain, Traditional Chinese medicine, Chronic pain
30 Vickers, A.J.; Linde, K.
Acupuncture for chronic pain
JAMA, 2014, 311(9), 955-956
Acupuncture, Clinical research, Complementary and alternative medicine, Meta-analysis, Pain, Traditional Chinese medicine, Chronic pain
31 Bahrami-Taghanaki, H.; Liu, Y.; Azizi, H.; Khorsand, A.; Esmaily, H.; Bahrami, A.; Zhao, B.X.
A randomized controlled trial of acupuncture for chronic low-back pain
Altern Ther Health Med, 2014, 20(3), 13-19
Acupuncture, Muscoskeletal -/Connective tissue system, Clinical research, Complementary and alternative medicine, Low back pain, Randomized trial, Pain, Traditional Chinese medicine, Chronic pain
32 Li, J.; Zhang, J.H.; Yi, T.; Tang, W.J.; Wang, S.W.; Dong, S.C.
Acupuncture treatment of chronic low back pain reverses an abnormal brain default mode network in correlation with clinical pain relief
Acupunct Med, 2014, 32(2), 102-108
Acupuncture, Observational trial, Muscoskeletal -/Connective tissue system, Brain, Clinical research, Complementary and alternative medicine, Low back pain, Nervous system, Pain, Traditional Chinese medicine, Chronic pain
33 Crawford, C.; Lee, C.; May, T.
Physically oriented therapies for the self-management of chronic pain symptoms
Pain Med, 2014, 15(Suppl 1), S54-S65
Acupressure, Acupuncture, Clinical research, Complementary and alternative medicine, Manual therapy, Physical therapy, Pain, Systematic review, Traditional Chinese medicine, Chronic pain
34 Hinman, R.S.; McCrory, P.; Pirotta, M.; Relf, I.; Forbes, A.; Crossley, K.M.; Williamson, E.; Kyriakides, M.; Novy, K.; Metcalf, B.R.; Harris, A.; Reddy, P.; Conaghan, P.G.; Bennell, K.L.
Acupuncture for chronic knee pain
A randomized clinical trial
JAMA, 2014, 312(13), 1313-1322
Acupuncture, Muscoskeletal -/Connective tissue system, Joints, Clinical research, Complementary and alternative medicine, Laserneedle acupuncture, Placebo-controlled, Randomized trial, Pain, Traditional Chinese medicine, Chronic pain
35 Zhao, H.-J.; Tan, J.-Y.; Wang, T.; Lang, J.
Auricular therapy for chronic pain management in adults
A synthesis of evidence
Complement Ther Clin Pract, 2015, epub ahead of print,
Acupuncture, Muscoskeletal -/Connective tissue system, Jugendmedizin, Clinical research, Complementary and alternative medicine, Headache, Low back pain, Nervous system, Ear acupuncture, Pediatrics, Back pain (non-specific), Pain, Systematic review, Traditional Chinese medicine, Chronic pain
36 Sahin, S.; Bicer, M.; Eren, G.A.; Tas, S.; Tudcu, V.; Tasci, A.I.; Cek, M.
Acupuncture relieves symptoms in chronic prostatitis/chronic pelvic pain syndrome
A randomized, sham-controlled trial
Prostate Cancer Prostatic Dis, 2015, 18(3), 249-254
Acupuncture, Urinary tract, Clinical research, Complementary and alternative medicine, Placebo-controlled, Inflammation of the prostata, Randomized trial, Pain, Traditional Chinese medicine, Chronic pain
37 Kücük, E.V.; Suceken, F.Y.; Bindayi, A.; Boylu, U.; Onol, F.F.; Gümüs, E.
Effectiveness of acupuncture on chronic prostatitis-chronic pelvic pain syndrome category IIIB patients
A prospective, randomized, nonblinded, clinical trial
Urology, 2015, 85(3), 636-640
Acupuncture, Urinary tract, Clinical research, Complementary and alternative medicine, Inflammation of the prostata, Randomized trial, Pain, Traditional Chinese medicine, Chronic pain
38 Fan, A.Y.; Zhou, K.; Gu, S.; Li, Y.M.
Acupuncture is effective for chronic knee pain
A reanalysis of the Australian acupuncture trial
Altern Ther Health Med, 2016, 22(3), 32-36
Acupuncture, Muscoskeletal -/Connective tissue system, Joints, Clinical research, Complementary and alternative medicine, Laserneedle acupuncture, Randomized trial, Pain, Traditional Chinese medicine, Chronic pain
39 Chong, O.T.; Critchley, H.O.D.; Horne, A.W.; Elton, R.; Haraldsdottir, E.; Fallon, M.
The BMEA study: the impact of meridian balanced method electroacupuncture on women with chronic pelvic pain
A three-arm randomised controlled pilot study using a mixed-methods approach
BMJ Open, 2015, 5(11), e008621; (1-9)
Acupuncture, Electroacupuncture, Gynaecology, Clinical research, Complementary and alternative medicine, Randomized trial, Pain, Traditional Chinese medicine, Chronic pain
40 Jones, S.M.; Lange, J.; Turner, J.; Cherkin, D.; Ritenbaugh, C.; Hsu, C.; Berthoud, H.; Sherman, K.
Development and validation of the EXPECT questionnaire
Assessing patient expectations of outcomes of complementary and alternative medicine treatments for chronic pain
J Altern Complement Med, 2016, 22(11), 936-946
Mindfulness meditation, Acupuncture, Observational trial, Muscoskeletal -/Connective tissue system, Chiropractic, Clinical research, Cognitive behavioral therapy, Complementary and alternative medicine, Low back pain, Manual therapy, Massage, Meditation, Methodology, Mind-body medicine, Psychology/psychotherapy, Pain, Theory, Traditional Chinese medicine, Yoga, Chronic pain
41 Lin, X.; Huang, K.; Zhu, G.; Huang, Z.; Qin, A.; Fan, S.
The effects of acupuncture on chronic knee pain due to osteoarthritis
A meta-analysis
J Bone Joint Surg Am, 2016, 98(18), 1578-1585
Acupuncture, Arthrosis, Muscoskeletal -/Connective tissue system, Clinical research, Knee arthrosis, Complementary and alternative medicine, Meta-analysis, Rheumatic diseases, Pain, Traditional Chinese medicine, Chronic pain
42 MacPherson, H.; Vertosick, E.A.; Foster, N.E.; Lewith, G.; Linde, K.; Sherman, K.J.; Witt, C.M.; Vickers, A.J.
The persistence of the effects of acupuncture after a course of treatment
A meta-analysis of patients with chronic pain
Pain, 2017, 158(5), 784-793
Acupuncture, Clinical research, Complementary and alternative medicine, Meta-analysis, Pain, Traditional Chinese medicine, Chronic pain
43 Patel, M.; Gutzwiller, F.; Paccaud, F.; Marazzi, A.
A meta-analysis of acupuncture for chronic pain
Int J Epidemiol, 1989, 18(4), 900-906
Acupuncture, Clinical research, Complementary and alternative medicine, Meta-analysis, Pain, Traditional Chinese medicine, Chronic pain
44 Plunkett, A.; Beltran, T.; Haley, C.; Kurihara, C.; McCoart, A.; Chen, L.; Wilkinson, I.; Cohen, S.P.
Acupuncture for the treatment of chronic pain in the military population
Factors associated with treatment outcomes
Clin J Pain, 2017, 33(10), 939-943
Acupuncture, Observational trial, Clinical research, Complementary and alternative medicine, Retrospective design, Pain, Traditional Chinese medicine, Chronic pain
45 Seca, S.; Miranda, D.; Patricio, M.; Correia, R.; Kirch, S.; Cabrita, A.S.; Greten, H.J.
New pressure algometry device for the quantification of acupuncture induced pain relief
J Altern Complement Integr Med, 2017, 3(1), 019; (1-7)
Acupuncture, Arthritis, Observational trial, Muscoskeletal -/Connective tissue system, Clinical research, Complementary and alternative medicine, Methodology, Rheumatic diseases, Pain, Theory, Traditional Chinese medicine, Chronic pain
46 Zhang, Q.; Yue, J.; Golianu, B.; Sun, Z.; Lu, Y.
Updated systematic review and meta-analysis of acupuncture for chronic knee pain
Acupunct Med, 2017, 35(6), 452-459
Acupuncture, Arthrosis, Muscoskeletal -/Connective tissue system, Clinical research, Knee arthrosis, Complementary and alternative medicine, Meta-analysis, Rheumatic diseases, Pain, Systematic review, Traditional Chinese medicine, Chronic pain
47 Seo, S.Y.; Lee, K.B.; Shin, J.S.; Lee, J.; Kim, M.R.; Ha, I.H.; Ko, Y.; Lee, Y.J.
Effectiveness of acupuncture and electroacupuncture for chronic neck pain
A systematic review and meta-analysis
Am J Chin Med, 2017, 45(8), 1573-1595
Acupuncture, Muscoskeletal -/Connective tissue system, Electroacupuncture, Clinical research, Complementary and alternative medicine, Meta-analysis, Neck pain, Pain, Systematic review, Traditional Chinese medicine, Chronic pain
48 Armstrong, K.; Gokal, R.; Todorsky, W.; Durant, J.
The successful treatment of chronic pain using microcurrent point stimulation applied to Battlefield Acupuncture protocol
Med Clin Res Rev, 2018, 2(2), 1-4
Acupuncture, Observational trial, Electrotherapy, Clinical research, Complementary and alternative medicine, Physical therapy, Pain, Traditional Chinese medicine, Chronic pain, Mikrostromtherapie, Cohort study
49 Chu, Y.-X.; Cui, W.-Q.; Xu, F.; Pan, Y.-Y.; Ma, Y.-H.; Chen, T.; Wang, S.-J.; Sun, H.-B.; Wang, Y.-Q.; Sun, W.-S.
Acupoint embedding of polyglactin 910 sutures in patients with chronic pain due to cervical spondylotic radiculopathy
A multicenter, randomized, controlled trial
eCAM, 2018, Article ID 3465897, (1-11)
Acupuncture, Muscoskeletal -/Connective tissue system, Clinical research, Complementary and alternative medicine, Nervous system, Placebo-controlled, Randomized trial, Pain, Spondylosis, Traditional Chinese medicine, Chronic pain, Pharmacopuncture, radiculopathy
50 Garner, B,K.; Hopkinson, S.G.; Ketz. A.K.; Landis, C.A.; Trego, L.L.
Auricular Acupuncture for chronic pain and insomnia
A randomized clinical trial
Med Acupunct, 2018, 30(5), 262-272
Acupuncture, Clinical research, Complementary and alternative medicine, Ear acupuncture, Mental diseases, Randomized trial, Sleep disorders, Pain, Traditional Chinese medicine, Chronic pain
51 Federman, D.G.; Zeliadt, S.B.; Thomas, E.R.; Carbone, G.F.; Taylor, S.L.
Battlefield acupuncture in the veterans health administration
Effectiveness in individual and group settings for pain and pain comorbidities
Med Acupunct, 2018, 30(5), 273-278
Acupuncture, Observational trial, Clinical research, Complementary and alternative medicine, Ear acupuncture, Pain, Traditional Chinese medicine, Chronic pain
52 Garner, B.K.; Hopkinson, S.G.; Ketz, A.K.; Landis, C.A.; Trego, L.L.
Auricular acupuncture for chronic pain and insomnia
A randomized clinical trial
Med Acupunct, 2018, 30(5), 262-272
Acupuncture, Clinical research, Complementary and alternative medicine, Ear acupuncture, Mental diseases, Randomized trial, Sleep disorders, Pain, Traditional Chinese medicine, Chronic pain
53 Castro Moura, C. de; Hollanda Iunes, D.; Ruginsk, S.G.; Souza, V.H.S.; Assis, B.B. de; Chaves, E. de C.L.
Action of ear acupuncture in people with chronic pain in the spinal column
A randomized clinical trial
Rev Lat Am Enfermagem, 2018, 26, e3050; (1-9)
Acupuncture, Muscoskeletal -/Connective tissue system, Clinical research, Complementary and alternative medicine, Ear acupuncture, Randomized trial, Back pain (non-specific), Pain, Traditional Chinese medicine, Spine, Chronic pain