1. King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia
2. Biotechnology Research Laboratories, Gastroeneterology, Surgery Centre, Mansoura University, Mansoura, Egypt
3. Special Infectious Agents Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia
4. Medical Laboratory Technology Department, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia