1. Low back pain in school children: an epidemiological study;Balagué;Scand. J. Rehab. Med.,1988
2. Non-specific low-back pain among school children: a field survey with analysis of some associated factors;Balagué;J. Spinal Discord,1994
3. Low back pain in school children: a study of familial and psychological factors;Balagué;Spine,1995
4. Bernard, B.P. (Ed.), 1997. Musculoskeletal disorders and workplace factors: a critical review of epidemiological evidence for work-related musculoskeletal disorders of the neck, upper extremity, and low back. U.S. Department of Health and Human Services. Public Health Service. Centers for disease control and prevention. National Institute for Occupational Safety and Health.
5. The incidence of back pain and headache among Swedish school children;Brattberg;Qual. Life Res.,1994