American Journal of Epidemiology Advance Access originally published online on December 5, 2006
American Journal of Epidemiology 2007 165(2):233-234; doi:10.1093/aje/kwk087
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American Journal of Epidemiology Copyright © 2006 by the Johns Hopkins Bloomberg School of Public Health All rights reserved; printed in U.S.A.
LETTERS TO THE EDITOR |
RE: "OCCUPATIONAL RISK FACTORS FOR ESOPHAGEAL AND STOMACH CANCERS AMONG FEMALE TEXTILE WORKERS IN SHANGHAI, CHINA"
1 Envirosafe Training and Consultants, Pittsburgh, PA 15239
2 Department of Environmental Medicine and Public Health, University of Padova, 2-35128 Padova, Italy
(e-mail: johnhlange@worldnet.att.net)
| The first 10% of the full text of this article appears below. |
A recent issue of the Journal included an excellent and interesting paper by Wernli et al. (1) supporting the concept that exposure to organic dust that contains endotoxin has beneficial effects against cancer. We would like to comment on the commonly suggested confounder associated with lower rates of cancer in workers exposed to organic dustsmokingand expand on