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Am J Epidemiol 2003; 158:1021.
Copyright © 2003 by Johns Hopkins Bloomberg School of Public Health

LETTERS TO THE EDITOR

RE: "CHRONIC DISEASE MORTALITY IN A COHORT OF SMOKELESS TOBACCO USERS"

Jon O. Ebbert1, Ping Yang1 and Scott L. Tomar2

1 Mayo Clinic Cancer Center, Mayo Clinic, Rochester, MN 55905
2 Division of Public Health Services and Research, University of Florida College of Dentistry, Gainesville, FL 32610-0405

The first 10% of the full text of this article appears below.

We read with great interest a recently published article (1) and have several concerns about the design and conclusions of this study.

First, the hazard ratios for causes of death for exclusive smokeless tobacco users were calculated relative to "non-tobacco users." This category included pipe and cigar smokers, the number of which was . . . [Full Text of this Article]

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