Dr OA

   Colegio de Médicos y Cirujanos de Costa Rica.

   1980 Doctor and Surgeon, Universidad de Costa Rica. 1985 Specialty in Pediatric Surgery, Universidad de Costa Rica. 1992 Specialty in Cardiovascular Surgery and thorax, Universidad de Cambridge. 1992 Master's Degree (MsC) in Cardiac Anatomy, Universidad Liverpool.

   1985 Residence in Pediatric Surgery, Hospital Nacional de Niños “Dr. Carlos Sáenz Herrera”. 1992 Residency in Cardiovascular and Thoracic Surgery, Royal Liverpool Children Hospital, Liverpool, Inglaterra.

   Asociación Panamericana de Cirugía Pediátrica. British Pediatric Cardiac Association. Asociación Costarricense de Cirugía. Asociación costarricense de Cirugía Pediátrica. Comité Científico del Colegio de Médicos y Cirujanos.

   1985 - 1987 Professor Ad-Honorem, Universidad de Costa Rica. 1985 - 2017 Associate Professor of the School of Medicine, Universidad de Costa Rica. 1986- 1988 Teaching Coordinator, Postgraduate Pediatric Surgery, Hospital Nacional de Niños “Dr. Carlos Sáenz Herrera”. 1988 Course Instructor of Emergency Medical Assistants, Universidad de Costa Rica and American Heart Association. 1988 Licensed Interim Professor, Universidad de Costa Rica. 1989 - 1993 Licensed Instructor, Universidad de Costa Rica. 1994 - 1996 Attached Professor, Universidad de Costa Rica. 1997 - 2014 Associate professor, Universidad de Costa Rica. 2000 - 2002 Director of the Department of Pediatrics. 2006 – 2016 Chief of the Cardiovascular and Thoracic Surgery Service, Hospital Nacional de Niños “Dr. Carlos Sáenz Herrera”.

   1975 Registration of honor, Universidad de Costa Rica. 1979 Registration of honor, Universidad de Costa Rica. 1980 Registration of honor, Universidad de Costa Rica. 1987 Godfather of Graduation, Surgeons Pediatricians, Hospital Nacional de Niños “Dr. Carlos Sáenz Herrera”.