Alfonso Silva-Santisteban

Alfonso Silva-Santisteban MD, MPH, is the director of the interdisciplinary research center on sexuality, AIDS, and society, at Cayetano Heredia University, in Lima, Peru.

Colombian anti-drugs policemen guard stacks of marijuana seized from the rural area of El Jagual at a military police base in Popayan October, 23, 2011.
Governance

Changing Drug Use in Colombia and Peru

by Alfonso Silva-Santisteban

People who use drugs should use them in the safest and most informed way