1. An historical perspective on low back pain and disability;Allan;Acta Orthopaedica Scandinavica,1989
2. Investigating back pain: the implications of two village studies in South Asia;Anderson,1987
3. Sensitivity, specificity and predictive value;Andersson,1991
4. A prospective study of the role of cardiovascular risk factors and fitness in industrial back pain complaints;Battie;Spine,1989