A follow-up study on velopharyngeal airway condition post pharyngoplasty
Liu Chao, Qin Chuanqi, Wang Yan, Li Wei, Zheng Qian, Shi Bing.
West China Journal of Stomatology . 2013, (5): 476 -478 .  DOI: 10.7518/hxkq.2013.05.008