Letters to the Editor: PDF Only
Frumkin, Howard MD, MPH; Myers, J. E. BSc, MB, ChB, DTM&H, MD; Bachmann, O. M. MB, ChB
Clinical Epidemiology Unit University of Pennsylvania School of Medicine 318R NEB 6095 Philadelphia, PA 19104
Department of Community Health Medical School University of Cape Town Observatory 7925 South Africa
Industrial Health Research Group Department of Sociology University of Cape Town Rondebosch 7700 South Africa
