Advisory and Updates on COVID-19 (Coronavirus Disease 2019): sutd.edu.sg/advisory.

WHAT IS THE DIFFERENCE IN THE REVIEW TYPES?

An application that requires a full review will be tabled and discussed at the monthly (subject to quorum) IRB board meeting. All IRB members have to approve the application.
 
An application that requires an expedited review will be approved by two IRB members and IRB Chair.
 
An application that is exempted from full review will be approved by the IRB Secretariat and IRB Chair.