A comparison between 0.25% bupivacaine and 0.25% ropivacaine in caudal anaesthesia in paediatric patients undergoing lower abdominal surgeries. International Journal of Biomedical Research, [S. l.], v. 8, n. 11, p. 641–645, 2017. DOI: 10.7439/ijbr.v8i11.4490. Disponível em: https://ssjournals.co.in/index.php/ijbr/article/view/4490. Acesso em: 20 apr. 2026.