Interested article in Wired, "A Nation of Guinea Pigs." Though the title strikes me as a bit...insensitive?...it contains a lot of interesting information.
While Jennifer Kahn, the author, does focus on a growing trend in the medical community -- the use of India as a base for later-phase clinical trials that require large numbers of participants -- she also alludes to a number of other issues. Namely, she takes on bribery/corruption, colonialism (or neocolonialism? God only knows), the ethics of testing in developing nations, politics, and the gray area for some doctors caught between increasingly professional duties to serve and bottom-line incentives.
Definitely worth a read.
(Via Arts & Letters Daily, one of my fave sites)