King Saud University, Riyadh, Saudi Arabia
King Saud university, Riyadh, Saudi Arabia
clinical Trial Unit, Riyadh, Saudi Arabia
Salah N. El-Tallawy, Riyadh, Saudi Arabia
King Khalid University Hospital, Riyadh, Saudi Arabia
College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
King Saud University, Riyadh, Saudi Arabia
King Saud University, Riyadh, Saudi Arabia
King Saud University, Riyadh, Saudi Arabia