The Children’s Oncology Group (COG) is conducting important maintenance on COG systems on Sunday, February 21st between 9am and 2pm (PST). All COG systems and services will be unavailable during this time period. This includes, but is not limited to: patient registration, enrollment, callback, manual treatment assignment and study data entry in eRDES/OPEN/RDE1 systems (data entry in iMedidata, Rave will not be affected) and all COG Web and desktop applications.


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