Author = Khalefa, Mahmoud S.
Study of surfactant level in cases of Otitis Media with Effusion

Volume 4, Issue 1, June 2018, Pages 10-18

Tahia Hashem Saleem; Esam A. Abo El-magd; Ahmd Gaber AbdElraheem; Zaki F. Aref; Mahmoud S. Khalefa