1. Research Center, King Fahad Medical City, Riyadh, Saudi Arabia
2. Comprehensive Cancer Center, King Fahad Medical City, Riyadh, Saudi Arabia
3. Department of Statistics, University of Malakand, Chakdara, Lower Dir, Pakistan
4. Women’s Specialized Hospital, King Fahad Medical City, Riyadh, Saudi Arabia
5. Department of Anaesthesia, Sheikh Khalifa Medical City, Ajman, UAE