Clinical follow-up of pediatric patients with abdominal pain and intraperitoneal fluid detected by ultrasound. Actas Médicas (Ecuador), [S. l.], v. 33, n. 2, p. 92–99, 2023. DOI: 10.61284/ev5s9p30. Disponível em: https://actasmedicas.ec/index.php/am/article/view/141.. Acesso em: 30 may. 2026.