VELASCO-BENÍTEZ, Carlos Alberto; CALDERÓN-GUERRERO, Otto Gerardo; RAMÍREZ-VILLAMIZAR, Johanna. Functional gastrointestinal disorders in schoolchildren with chronic abdominal pain in a pediatric digestive endoscopy unit. Universidad y Salud, San Juan de Pasto, CO, v. 22, n. 1, p. 52–57, 2019. DOI: 10.22267/rus.202201.174. Disponível em: https://revistas.udenar.edu.co/index.php/usalud/article/view/3984. Acesso em: 19 may. 2026.