1. What Can the History and Physical Examination Tell Us About Low Back Pain?
2. Physician Office Visits for Low Back Pain
3. National Institute of Neurological Disorders and Stroke. Low back pain fact sheet. URL: http://www.ninds.nih.gov/disorders/backpain/detail_backpain.htm.
4. Centers for Disease Control, National Center for Health Statistics, Division of Health Interview Statistics. 2002 National Health Interview Survey (NHIS) public use data release, NHIS Survey Description. URL: ftp://ftp.cdc.gov/pub/Health_Statistics/NCHS/Dataset_Documentation/NHIS/2002/srvydesc.pdf.