Possible association between successful intubation via the right nostril and anatomical variations of the nasopharynx during nasotracheal intubation: a multiplanar imaging study. - Takasugi, Yoshihiro; Futagawa, Koichi; Konishi, Tatsuo; Morimoto, Daisuke; Okuda, Takahiko (Journal of Anesthesia, 2016)