Socioeconomic differences in severe back morbidity.
Punnett
L
L
Department of Work Environment, University of Massachusetts Lowell, Lowell, MA 01854, USA. Laura_Punnett@uml.edu
D001416:Back Pain / Q000401:mortality*; D005260:Female; D006801:Humans; D008297:Male; D012959:Socioeconomic Factors