Donor Stem Cell Transplant in Treating Patients With High-Risk Chronic Lymphocytic Leukemia or Small Lymphocytic Lymphoma

New York Weill Cornell Cancer Center at Cornell University, New York

Memorial Sloan-Kettering Cancer Center, New York

CCOP - North Shore University Hospital, Manhasset

Don Monti Comprehensive Cancer Center at North Shore University Hospital, Manhasset

Long Island Jewish Medical Center, New Hyde Park

Monter Cancer Center of the North Shore-LIJ Health System, Lake Success

CCOP - Christiana Care Health Services, Newark

Tunnell Cancer Center at Beebe Medical Center, Lewes

Union Hospital of Cecil County, Elkton

Cleveland Clinic Taussig Cancer Center, Cleveland

Siteman Cancer Center at Barnes-Jewish Hospital - Saint Louis, St Louis

Oklahoma University Cancer Institute, Oklahoma City

City of Hope Comprehensive Cancer Center, Duarte

Florida Hospital Cancer Institute at Florida Hospital Orlando, Orlando

H. Lee Moffitt Cancer Center and Research Institute at University of South Florida, Tampa

University of Chicago Cancer Research Center, Chicago

Holden Comprehensive Cancer Center at University of Iowa, Iowa City

Massachusetts General Hospital, Boston

Dana-Farber/Brigham and Women's Cancer Center, Boston

Dana-Farber/Harvard Cancer Center at Dana-Farber Cancer Institute, Boston

UNMC Eppley Cancer Center at the University of Nebraska Medical Center, Omaha

Cancer Institute of New Jersey at Cooper - Voorhees, Voorhees Township

Roswell Park Cancer Institute, Buffalo

Wake Forest University Comprehensive Cancer Center, Winston-Salem

Arthur G. James Cancer Hospital and Richard J. Solove Research Institute at Ohio State University Comprehensive Cancer Center, Columbus