1. Department of General Surgery, Hospitales La Paz (SERMESA), Guatemala City, Guatemala.
2. Department of Vascular Surgery, Hospital Herrera Llerandi, Guatemala City, Guatemala.
3. Department of Hepatopancreatobiliary and Liver Transplant Surgery, Hospital Herrera Llerandi, Guatemala City, Guatemala.
4. Department of Transplant Surgery, Hospital Herrera Llerandi, Guatemala City, Guatemala