Yasser Rayan is currently working at Aswan University, Egypt.
Abstract
This is a prospective comparative study that included 41 patients at National Cancer Institute (NCI) of Cairo University and Aswan University Hospital in the period from 2015 to 2018. Patients were selected from those who were attending the Outpatient Clinic of Head and Neck Surgery Unit at NCI, Cairo University and Aswan University Hospital.