1. Importance and economic burden of occupational back pain: a study of 2500 cases representative of Quebec;Abenhaim;Journal of Occupational Medicine,1987
2. The epidemiology of spinal disorders;Andersson,1991
3. The intensity of work recovery in low back pain;Andersson;Spine,1983
4. Pain in the back and leg: a general practice survey;Barker;Rheumatology and Rehabilitation,1977
5. Isometric lifting strength as a predictor of industrial back pain;Battie;Spine,1989