1. Palliative Care, King Fahad Medical City, Riyadh, Kingdom of Saudi Arabia.
2. College of Medicine, King Saud University, Riyadh, Kingdom of Saudi Arabia.
3. Pediatric Emergency, King Salman bin Abdulaziz Medical City, Al Madinah Al Manawarah, Kingdom of Saudi Arabia.
4. Pediatric Emergency and Medical Toxicology, King Fahad Medical City, Riyadh, Kingdom of Saudi Arabia.