CERTIFICATE OF PARTICIPATION College of Medicine King Saud bin Abdulaziz University for Health Sciences - Jeddah This is to certify that Afnan Alsulami Has presented in the Oral Presentation session of topic entitled Chemical and Microbiological Changes of Outdated Platelet Concentrate at The Third Annual Research Forum for College of Medicine – Jeddah Held at King Saud Bin Abdullaziz University for Health Sciences Jeddah, Saudi Arabia On 18th of February 2021 Dr. Alqassem Hakami Chairman, Research Unit Dr. Mubarak Al Mansour Associate Dean, Academic and Student affairs, College of Medicine Dr. Mansour Al Qurashi Dean, College of Medicine