Study designs and research methodology in the field of otolaryngology by Sameh M. Zamzam, Mosaad Abdel-Aziz, Ahmed Atef, Usama Abdel-Naseer, Mostafa Hamoda, Mohamed Salah, Hazem Dewidar, Louay Elsharkawy, Mahmoud Fawzy, Mohamed Shabana, Mostafa Elkhosht, Hussan Eldesouky, Hussien Sherif Hamdy

Get full text