It goes both ways: a cross-sectional study of buying and selling sex among young behaviourally bisexual men in Vientiane, Laos.
Bowring AL, van Gemert C, Vongsaiya K, Hughes C, Sihavong A, Phimphachanh C, Chanlivong N, Toole M, Hellard M
HIV + AIDS Sexually Transmitted Infections (STI's)