BHATTARAI, B.; SHRESTHA, S. K.; KANDEL, S. Comparison of sniffing position and simple head extension for visualization of glottis during direct laryngoscopy. Kathmandu University Medical Journal, [S. l.], v. 9, n. 1, p. 58–63, 2012. DOI: 10.3126/kumj.v9i1.6265. Disponível em: https://www.nepjol.info/index.php/KUMJ/article/view/6265. Acesso em: 27 oct. 2021.