Nivolumab With or Without Ipilimumab in Treating Patients With Refractory Metastatic Anal Canal Cancer
National Cancer Institute (NCI)
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National Cancer Institute (NCI)
National Cancer Institute (NCI)
National Cancer Institute (NCI)
National Cancer Institute (NCI)
National Cancer Institute (NCI)
National Cancer Institute (NCI)
National Cancer Institute (NCI)
National Cancer Institute (NCI)
National Cancer Institute (NCI)
National Cancer Institute (NCI)
National Cancer Institute (NCI)
National Cancer Institute (NCI)
National Cancer Institute (NCI)
National Cancer Institute (NCI)
National Cancer Institute (NCI)
National Cancer Institute (NCI)
National Cancer Institute (NCI)
National Cancer Institute (NCI)
National Cancer Institute (NCI)
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NRG Oncology
Eastern Cooperative Oncology Group
National Cancer Institute (NCI)
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University of Kansas Medical Center
National Cancer Institute (NCI)
City of Hope Medical Center
Northwestern University
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OHSU Knight Cancer Institute
Zhejiang Cancer Hospital
Children's Oncology Group
Zhejiang Cancer Hospital
National Cancer Institute (NCI)
University of Southern California
City of Hope Medical Center
Mayo Clinic
National Cancer Institute (NCI)
National Cancer Institute (NCI)
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National Cancer Institute (NCI)
National Cancer Institute (NCI)