The National Institute on Drug Abuse (NIDA), a component of the National Institutes of Health (NIH), has so far awarded $1.44 million in federal funds to a project that, among other things, is estimating the size of the population and examining the “social milieu” of male prostitutes in Hanoi and Ho Chi Minh City, Vietnam. “In Study 1, formative ethnography will be used to describe the settings, venues, and overall social milieu in which male sex work is being situated,” says the NIH abstract for the grant. “In Study 2, we will conduct a Capture-Recapture Survey to estimate the size...