Figure 2: Researchers’ Experience with Delays in Research Due to REB Ethics Review of Multi-Site Studies. Responses of AllerGen researchers (n=16) to 2 multiple choice questions regarding their experience with the submission of ethics applications to multiple REBs was quantified. Questions: (e) Has your study start date ever been delayed by the requirement to seek ethics approval from multiple REBs? (f) Did the time required to obtain multiple REB approvals for a multi-site study delay any of the following?