(Q37374556)
Statements
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Study protocol, sample characteristics, and loss to follow-up: the OPPERA prospective cohort study (English)
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Richard Ohrbach
Ronald Dubner
William Maixner
Shad B Smith
Luda Diatchenko
Yoly Gonzalez
Sharon M Gordon
Pei-Feng Lim
Margarete Ribeiro-Dasilva
Dawn Dampier
Charles Knott
1 December 2013
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