Gabriela Borrayo Sanchez, Mexico City, Mexico
Department of Pediatric Surgery of the Pediatrics Hospital of the Western Medical Center of the Mexican Institute of Social Security, Guadalajara, Jalisco, Mexico
Department of Gastrointestinal Endoscopy and Department of Gastroenterology of the Specialties Hospital of the Western Medical Center of the Mexican Institute of Social Security., Guadalajara, Jalisco, Mexico
Western Medical Center, Mexican Institute of Social Security, Guadalajara, Jalisco, Mexico
Civil Hospital of Guadalajara Fray Antonio Alcalde, Guadalajara, Jalisco, Mexico
Centro Medico Nacional Siglo XXI. UMAE Hospital de Especialidades, Mexico, Distrito Federal, Mexico
Mexican Institute of social security: highly specialized medical unit number 1 Bajio, Leon, Guanajuato, Mexico
Ambulatory care medical unit number 55 (UMAA 55), Leon, Guanajuato, Mexico
Hospital General de Zona N 4. Instituto Mexicano del Seguro Social, Celaya, Guanajuato, Mexico