1. Pathology and Laboratory Department Prince Mishari bin Saud Hospital in Baljurashi, Ministry of Health Al‐Bahah Saudi Arabia
2. Pathology Department, Faculty of Medicine Al‐Azhar University Cairo Egypt
3. ENT Department Prince Mishari bin Saud Hospital in Baljurashi, Ministry of Health Al‐Bahah Saudi Arabia
4. Nursery Departments King Fahad Hospital, Ministry of Health Al‐Bahah Saudi Arabia
5. Laboratory Department Al‐Mezailef General Hospital, Ministry of Health Al‐Mezailef Saudi Arabia
6. Pathology Department Republic of Sudan Federal Ministry of Health Khartoum Sudan