"We shouldn't be taking advantage of these people's weaknesses."
The experts projected what might happen in fighting the AIDS virus, which infects more than 20 million people in Africa.
"Between 2006 and 2012 there could be an almost three-fold increase in the number of patients per physician (from about 9,000 to 26,000) and an overall decrease in the number of physicians treating patients with HIV from 21,000 to about 10,000," they wrote.
This compares to about 2,000 patients a year for a U.S. doctor, they said.
But Mills and his colleagues said countries that benefit from the recruits should "make amends" by offering training, building and staffing new health schools and providing ways for health workers to stay in their own countries.
