AU - Haake M, MüLler H, Schade-Brittinger C, et al TI - German acupuncture trials (gerac) for chronic low back pain: Randomized, multicenter, blinded, parallel-group trial with 3 groups PT - JOUR DP - 2007 TA - Archives of Internal Medicine pages = {1892-1898}, VI - 167 IP - 17 AID - 10.1001/Archinte.167.17.1892 [doi] 4100 - http://dx.doi.org/10.1001/Archinte.167.17.1892 SO - Archives of Internal Medicine September 24, 2007 167(17):1892