Theophylline in Treating Patients With In Situ, Stage I, or Stage II Chronic Lymphocytic Leukemia

Veterans Affairs Medical Center - New York, New York

Kaplan Cancer Center, New York

Albert Einstein Comprehensive Cancer Center, The Bronx

Veterans Affairs Medical Center - Brooklyn, Brooklyn

Veterans Affairs Medical Center - Albany, Albany

University of Rochester Cancer Center, Rochester

University of Pittsburgh Cancer Institute, Pittsburgh

Veterans Affairs Medical Center - Pittsburgh, Pittsburgh

CCOP - MainLine Health, Wynnewood

University of Pennsylvania Cancer Center, Philadelphia

Kimmel Cancer Center of Thomas Jefferson University - Philadelphia, Philadelphia

Fox Chase Cancer Center, Philadelphia

CCOP - Christiana Care Health Services, Wilmington

Johns Hopkins Oncology Center, Baltimore

Veterans Affairs Medical Center - Atlanta (Decatur), Decatur

Emory University Hospital - Atlanta, Atlanta

Sylvester Cancer Center, University of Miami, Miami

H. Lee Moffitt Cancer Center and Research Institute, Tampa

Veterans Affairs Medical Center - Tampa (Haley), Tampa

Veterans Affairs Medical Center - Nashville, Nashville

CCOP - Columbus, Columbus

Veterans Affairs Medical Center - Cleveland, Cleveland

Veterans Affairs Medical Center - Indianapolis (Roudebush), Indianapolis

CCOP - Ann Arbor Regional, Ann Arbor

Medical College of Wisconsin, Milwaukee

Veterans Affairs Medical Center - Milwaukee (Zablocki), Milwaukee

Veterans Affairs Medical Center - Madison, Madison

University of Wisconsin Comprehensive Cancer Center, Madison

CCOP - Marshfield Medical Research and Education Foundation, Marshfield

CCOP - Metro-Minnesota, Saint Louis Park

Veterans Affairs Medical Center - Minneapolis, Minneapolis

CCOP - Duluth, Duluth

Mayo Clinic Cancer Center, Rochester

CCOP - Merit Care Hospital, Fargo

CCOP - Evanston, Evanston

Robert H. Lurie Comprehensive Cancer Center, Northwestern University, Chicago

Veterans Affairs Medical Center - Chicago (Lakeside), Chicago

CCOP - Illinois Oncology Research Association, Peoria

CCOP - Carle Cancer Center, Urbana

CCOP - Central Illinois, Springfield

CCOP - Missouri Valley Cancer Consortium, Omaha

MBCCOP - LSU Medical Center, New Orleans

CCOP - Ochsner, New Orleans

CCOP - St. Francis Hospital/Natalie Warren Bryant Cancer Center, Tulsa

CCOP - Southern Nevada Cancer Research Foundation, Las Vegas

Beckman Research Institute, City of Hope, Los Angeles

Veterans Affairs Medical Center - Palo Alto, Palo Alto

CCOP - Scottsdale Oncology Program, Scottsdale

Stanford University Medical Center, Stanford

CCOP - Colorado Cancer Research Program, Inc., Denver

Walter Reed Army Medical Center, Washington D.C.

Veterans Affairs Medical Center - Gainsville, Gainesville

Indiana University Cancer Center, Indianapolis

CCOP - Cedar Rapids Oncology Project, Cedar Rapids

CCOP - Iowa Oncology Research Association, Des Moines

CCOP - Wichita, Wichita

New England Medical Center Hospital, Boston

Beth Israel Deaconess Medical Center, Boston

CCOP - Kalamazoo, Kalamazoo

Veterans Affairs Medical Center - East Orange, East Orange

CCOP - Northern New Jersey, Hackensack

Cancer Institute of New Jersey, New Brunswick

Ireland Cancer Center, Cleveland

CCOP - Toledo Community Hospital Oncology Program, Toledo

CCOP - Geisinger Clinical and Medical Center, Danville

Allegheny University Hospitals- Hahnemann, Philadelphia

CCOP - Sioux Community Cancer Consortium, Sioux Falls

Vanderbilt Cancer Center, Nashville

MBCCOP - San Juan, San Juan

Veterans Affairs Medical Center - San Juan, San Juan

Pretoria Academic Hospital, Pretoria