Fatemeh FARAHMAND; Manijeh KHALILI; Leila SHAHBAZNEJAD; Armin HIRBOD-MOBARAKEH; Mehri NAJAFI SANI; Ahmad KHODADAD; Farzaneh MOTAMED; Nima REZAEI. Clinical Presentation of Cystic Fibrosis at the Time of Diagnosis: A Multicenter Study in a Region Without Newborn Screening. Turkish Journal of Gastroenterology 2019, 24, 541-545.