1. Medical Department, Renal Therapy Services‐Latin America Bogotá, DC Colombia
2. Epidemiology Department, Universidad Nacional de Colombia Bogotá, DC Colombia
3. Medical Affairs, Baxter Healthcare Corporation Deerfield Illinois USA
4. Medical Department, Renal Therapy Services‐Colombia Bogotá, DC Colombia
5. Nephrology Department, Renal Therapy Services‐Barranquilla Barranquilla Colombia