Doctor and surgeon. General Surgeon. Sub specialist in critical medicine and intensive care. University teaching specialist. Coordinator of critical medicine, delivery room and operating rooms of the Villavicencio Departmental Hospital. Research leader of the Corporación Clínica Universidad Cooperativa de Colombia. Director of the Villavicencio Research Group – GRIVI. Assistant professor of the Faculty of Medicine of the Cooperative University of Colombia, Villavicencio headquarters. Email: norton.perezg@campusucc.edu.co