TY  - JOUR
A1  - Hayes, R.J.
A1  - Schulz, K.F.
A1  - Plummer, F.A.
T1  - The cofactor effect of genital ulcers on the per-exposure risk of HIV transmission in sub-Saharan Africa
Y1  - 1995
JF  - Journal of Tropical Medicine and Hygiene
VL  - 98
SP  - 1
EP  - -8

ER  -