TY  - JOUR
A1  - Halperin, D.T.
A1  - Epstein, H.
T1  - Concurrent sexual partnerships help to explain Africa's high HIV prevalence: Implications for prevention
Y1  - 2004
DO  - 10.1016/S0140-6736(04)16606-3
JF  - The Lancet
VL  - 364
IS  - 9428
SP  - 4
EP  - -6

ER  -