Respiratory resistance of the velopharynx after pharyngeal flap operation - Matsuya, Tokuzo; Nishio, Juntaro; Miyazaki, Tadashi; Wada, Takeshi; Fukuda, Tomiko; Inoue, Kazuo; Tanaka, Tsutomu; Hamamura, Yasuhi (Journal of Japanese Cleft Palate Association, 1980)