1. Instituto Ecuatoriano de Enfermedades Digestivas – IECED, Guayaquil, Ecuador
2. Gastrolife, Barra Life Medical Center, Rio de Janeiro, Brazil
3. Hospital Clínico Universitario. Universidad de Santiago de Compostela (USC), Santiago de Compostela, Spain
4. Universitair Ziekenhuis Brussel (UZB), Vrije Universiteit Brussel (VUB), Brussels, Belgium
5. Mdconsgroup, Guayaquil, Ecuador
6. Hospital Civil Morelia, Morelia, Mexico