1. School of Medicine-Universidad de La Sabana, Fundación Abood Shaio; Department of Surgery; Campus Puente del Comun km 21 via Chia Chia Cundinamarca Colombia
2. Hospital Universitario San Ignacio - Pontificia Universidad Javeriana; Department of Surgery; Bogota Colombia
3. School of Medicine-Pontificia Universidad Javeriana; Department of Surgery; Bogota Colombia