1 Research and Innovation Center, King Saud Medical City, Ministry of Health, Riyadh 11553, Saudi Arabia.
2 College of Medicine, Alfaisal University, Riyadh, Saudi Arabia.
3 Kyung Hee University, Seoul, South Korea.
4 Hubert Department of Global Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA.
5 Division Head Inpatient General Pediatrics, Pediatric Department, College of Medicine, King Saud Bin Abdulaziz University for Health Sciences, King Abdullah Specialist Children's Hospital, Riyadh, Saudi Arabia.