Nivolumab After Combined Modality Therapy in Treating Patients With High Risk Stage II-IIIB Anal Cancer
National Cancer Institute (NCI)
National Cancer Institute (NCI)
Massachusetts General Hospital
Children's Oncology Group
AIDS Malignancy Consortium
Tongji Hospital
AIDS Malignancy Consortium
Shanghai Chest Hospital
UNICANCER
National Cancer Institute (NCI)
National Cancer Institute (NCI)