Friday, November 21, 2008 - 12:22PM EST

United States

Connecticut

Name of AuthorInstitutional Affiliation
Ma XDepartment of Epidemiology and Public Health, Yale University School of Medicine, New Haven, Connecticut 06520, USA. xiaomei.ma@yale.edu
Mayne STDepartment of Epidemiology and Public Health, Yale University School of Medicine, New Haven, Connecticut 06520, USA.
 
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