Comparison of clonidine and tramadol for the control of shivering under spinal anaesthesia. International Journal of Biomedical and Advance Research, [S. l.], v. 6, n. 1, p. 25–31, 2015. DOI: 10.7439/ijbar.v6i1.1492. Disponível em: https://ssjournals.co.in/index.php/ijbar/article/view/1492. Acesso em: 17 feb. 2026.