SEETASARN, J. Factors affecting the undetectable ureteric stone in the abdominal ultrasound of patients with acute abdominal pain in the emergency room at Nan Hospital. Journal of Nakornping Hospital, [S. l.], v. 14, n. 2, p. 246–258, 2023. Disponível em: https://he01.tci-thaijo.org/index.php/jnkp/article/view/264418. Acesso em: 21 may. 2024.