An indication whether there is more than one Cancer Center participating in the trial, derived as follows:
- Y (Yes) = There is more than one site (organization) participating in the trial, and these participating sites are not all members of the same Cancer Center (organization family).
- N (No) = One or more sites are participating in the trial, but all participating sites are members of the same Cancer Center.
Note: Based on CTRP (rather than ClinicalTrials.gov relationships).
