Study of additive effect of Dexmedetomidine added to epidural Ropivacaine for orthopedic lower limb procedures. International Journal of Biomedical Research, [S. l.], v. 8, n. 12, p. 699–703, 2017. DOI: 10.7439/ijbr.v8i12.4396. Disponível em: https://www.ssjournals.co.in/index.php/ijbr/article/view/4396. Acesso em: 15 mar. 2026.