TÜRK, Hacer Şebnem; AYDOĞMUŞ, Meltem; ÜNSAL, Oya; IŞIL, Canan Tülay; CITGEZ, Bülent; OBA, Sibel; AÇIK, Mehmet Eren. Ketamine versus alfentanil combined with propofol for sedation in colonoscopy procedures: A randomized prospective study. Turkish Journal of Gastroenterology, [S. l.], v. 25, n. 6, p. 644–649, 2014. DOI: 10.5152/tjg.2014.7014. Disponível em: https://www.turkjgastroenterol.org/index.php/tjg/article/view/2643. Acesso em: 1 jan. 2026.