1. Occupational low back pain,1991
2. New perspectives on low back pain,1989
3. Estimation of the prevalence of low back pain in the general population;Papageorgiou,1995
4. Low back disability among self-employed dentists, veterinarians, physicians and physical therapists in The Netherlands;van Doorn,1995
5. Claims costs of back pain;Antonakes;Best's Review,1981