Effects of addition of different doses of clonidine to intrathecal ropivacaine in lower limb and subumbilical surgeries. International Journal of Biomedical Research, [S. l.], v. 7, n. 9, p. 689–694, 2016. DOI: 10.7439/ijbr.v7i9.3624. Disponível em: https://ssjournals.co.in/index.php/ijbr/article/view/3624.. Acesso em: 18 oct. 2024.