American Journal of Epidemiology (Vol. 177, No. 10, May 15, 2013).
aje.oxfordjournals.org/content/177/10?etoc
American Journal of Public Health (Vol. 103, No. 6, June 2013).
American Journal of Epidemiology (Vol. 177, No. 10, May 15, 2013).
aje.oxfordjournals.org/content/177/10?etoc
American Journal of Public Health (Vol. 103, No. 6, June 2013).
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