Juan Manuel Canales, the physician who leads the DGH's work in Mexico and who is the recipient of the 2006 Jonathan Mann Award for Health and Human Rights, was interviewed by a Colombian radio station about how he practices Liberation Medicine in Chiapas. The interview took place while he was at a conference in Cuba. The 12-minute interview is in Spanish.
You can also read about Dr. Canales in this DGH Reporter article about him:
DGH Profile: Juan Manuel Canales, PDF.