Adhikari, K MVenkatnarayan, Kannan2016-12-052016-12-052016-10K M Adhikari and Kannan Venkatnarayan. Masking of the Symptoms of Bilateral Congenital Choanal Atresia by a Coexisting Anomaly of the Upper Lip. Indian Pediatrics. 2016 Oct; 53(10): 929.http://imsear.searo.who.int/handle/123456789/179295enMasking of the Symptoms of Bilateral Congenital Choanal Atresia by a Coexisting Anomaly of the Upper Lip.Article