- Correspondence to: Dr Ralph C Carabello Office on Smoking and Health, National Center for Chronic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention, Atlanta, Georgia, Mail Stop K-50, 4770 Buford Highway, NE, Atlanta, GA 30341-3724, USA;
- Received June 7, 2005
- Accepted October 15, 2005
- First published January 24, 2006.
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