Randomised Clinical Trial of Manipulative Therapy & PT for Persistent Back & Neck Complaints:1-Year Follow Up
BMJ 304:601-605, Koes,B.W.,et al, 1992
A Controlled Trial of Transcutaneous Electrical Nerve Stimulation (Tens) and Exercise for Chronic Low Back Pain
NEJM 322:1627-1634, Deyo,R.A.,et al, 1990