1.
Velasco-Benítez CA, Calderón-Guerrero OG, Ramírez-Villamizar J. Functional gastrointestinal disorders in schoolchildren with chronic abdominal pain in a pediatric digestive endoscopy unit. Univ. Salud [Internet]. 2019 Dec. 30 [cited 2026 Apr. 15];22(1):52-7. Available from: https://revistas2.udenar.edu.co/index.php/usalud/article/view/3984