1. Department of Surgery, El Bosque University, Associated with Dr. Horacio Oduber Hospitaal, Oranjestad, Aruba
2. Department of Surgery, El Bosque University, Los Cobos Medical Center, Bogotá, Colombia
3. Department of Surgery, Universitair Ziekenhuis Brussel, Jette, Belgie, Dr. Horacio Oduber Hospitaal, Oranjestad, Aruba
4. Department of Clinical Pathology, Universidad El Bosque, Bogotá, Colombia