Spectrum of upper gastrointestinal bleed in children. International Journal of Biomedical Research, [S. l.], v. 8, n. 11, p. 636–640, 2017. DOI: 10.7439/ijbr.v8i11.4487. Disponível em: https://ssjournals.co.in/index.php/ijbr/article/view/4487. Acesso em: 14 mar. 2025.