General and Digestive Surgery Department, University Hospital of Sant Joan, Pere Virgili Health's Institute, Faculty of Medicine, Reus (Tarragona), España; Section of Morbid Obesity, Spanish Association of Surgeons. Metabolic and Gastroesophageal Surgery Unit, Virgen de la Macarena University Hospital, Sevilla, España; Section of Morbid Obesity, Spanish Association of Surgeons. Clinical Institute of Digestive and Metabolic Diseases, Hospital Clínic de Barcelona, Barcelona, España; Section of Morbid Obesity, Spanish Association of Surgeons. General and Digestive Surgery Department, Bariatric and Gastroesophageal Surgery Innovation Unit, University Hospital Virgen del Rocío, Sevilla, España; Section of Morbid Obesity, Spanish Association of Surgeons. Department of Surgery, Bariatric and Metabolic Surgery, Clínica Universidad de Navarra, CIBER Pathophysiology of Obesity and Nutrition (CIBERobn), Carlos III Health's Institut, Health Research Institute of Navarra, Pamplona, España; Section of Morbid Obesity, Spanish Association of Surgeons. Bariatric Surgery Unit, Surgery Department, Bellvitge University Hospital, L'Hospitalet de Llobregat (Barcelona), España; Section of Morbid Obesity, Spanish Association of Surgeons. Surgery Department, Ramón y Cajal University Hospital, Madrid, España; Section of Morbid Obesity, Spanish Association of Surgeons. Metabolic, Bariatric and General Surgery Department, Asturias Medical Center, Oviedo, España; Section of Morbid Obesity, Spanish Association of Surgeons. Endocrine, Metabolic and Bariatric Surgery Unit, Center of Excellence for the EAC-BC, General Surgery Department, Vall d'Hebron University Hospital, Barcelona, España; Section of Morbid Obesity, Spanish Association of Surgeons. Endocrinology and Nutrition Department, Bellvitge University Hospital, L'Hospitalet de Llobregat (Barcelona), España; Section of Morbid Obesity, Spanish Association of Surgeons. General and Digestive Surgery Department, Complejo Hospitalario de Pontevedra, Pontevedra, España; Section of Morbid Obesity, Spanish Association of Surgeons. Electronic address: raquelsanchezsantos@gmail.com.