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7by LITT, Jill S, SOOBADER, Mah-J, TURBIN, Mark S, HALE, James W, BUCHENAU, Michael, MARSHALL, Julie AGet full text
Published in American journal of public health (1971)
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20by Casper, C, Carrell, D, Miller, K G, Judson, F D, Meier, A S, Pauk, J S, Morrow, R A, Corey, L, Wald, A, Celum, CGet full text
Published in Sexually transmitted infections
Article