1. From King Abdulaziz Medical City, Jeddah. National Guard Health Affairs, Saudi Arabia
2. Correspondence: Hassan Ba'aqeel, MD · Medical Affairs, King Abdulaziz Medical City, PO Box 9515, Jeddah 21423, Saudi Arabia · T: +966-2-624-0000 ext. 21028 F: +966-2-624-0000 ext. 22097 · baaqeelhs@ngha.med.sa