Gunnar B.J. Andersson, M.D., Ph.D., Tracy Lucente, M.P.H., Andrew M. Davis, M.D., M.P.H., Robert E. Kappler, D.O., James A. Lipton, D.O., and Sue Leurgans, Ph.D. N Engl J Med 1999; 341:1426-1431 November 4, 1999 DOI: 10.1056/NEJM199911043411903 BACKGROUND The effect of osteopathic manual therapy (i.e., spinal manipulation) in patients with chronic and subchronic back pain is largely unknown, […]