Study to Assess Compliance With Long-Term Mercaptopurine Treatment in Young Patients With Acute Lymphoblastic Leukemia in Remission

Princess Margaret Hospital for Children, Perth

Laura and Isaac Perlmutter Cancer Center at NYU Langone, New York

NYP/Columbia University Medical Center/Herbert Irving Comprehensive Cancer Center, New York

Montefiore Medical Center - Moses Campus, The Bronx

New York Medical College, Valhalla

Brooklyn Hospital Center, Brooklyn

NYU Winthrop Hospital, Mineola

Stony Brook University Medical Center, Stony Brook

State University of New York Upstate Medical University, Syracuse

Roswell Park Cancer Institute, Buffalo

Children's Hospital of Pittsburgh of UPMC, Pittsburgh

Geisinger Medical Center, Danville

Lehigh Valley Hospital - Muhlenberg, Bethlehem

Children's Hospital of Philadelphia, Philadelphia

Alfred I duPont Hospital for Children, Wilmington

MedStar Georgetown University Hospital, Washington D.C.

Children's National Medical Center, Washington D.C.

Inova Fairfax Hospital, Falls Church

Virginia Commonwealth University/Massey Cancer Center, Richmond

West Virginia University Charleston Division, Charleston

Wake Forest University Health Sciences, Winston-Salem

Duke University Medical Center, Durham

Novant Health Presbyterian Medical Center, Charlotte

Mission Hospital Inc-Memorial Campus, Asheville

Prisma Health Richland Hospital, Columbia

Children's Healthcare of Atlanta - Egleston, Atlanta

Augusta University Medical Center, Augusta

Nemours Children's Clinic-Jacksonville, Jacksonville

Nemours Children's Clinic - Pensacola, Pensacola

Sacred Heart Hospital, Pensacola

University of Florida Health Science Center - Gainesville, Gainesville

AdventHealth Orlando, Orlando

Nemours Children's Clinic - Orlando, Orlando

Memorial Regional Hospital/Joe DiMaggio Children's Hospital, Hollywood

University of Miami Miller School of Medicine-Sylvester Cancer Center, Miami

Miami Cancer Institute, Miami

Saint Joseph's Hospital/Children's Hospital-Tampa, Tampa

Johns Hopkins All Children's Hospital, St. Petersburg

Lee Memorial Health System, Fort Myers

Children's Hospital of Alabama, Birmingham

University of Alabama at Birmingham Cancer Center, Birmingham

Vanderbilt University/Ingram Cancer Center, Nashville

T C Thompson Children's Hospital, Chattanooga

East Tennessee Childrens Hospital, Knoxville

University of Mississippi Medical Center, Jackson

University of Kentucky/Markey Cancer Center, Lexington

Nationwide Children's Hospital, Columbus

The Toledo Hospital/Toledo Children's Hospital, Toledo

Rainbow Babies and Childrens Hospital, Cleveland

Children's Hospital Medical Center of Akron, Akron

Dayton Children's Hospital, Dayton

Indiana University/Melvin and Bren Simon Cancer Center, Indianapolis

Saint Vincent Hospital and Health Care Center, Indianapolis

C S Mott Children's Hospital, Ann Arbor

Wayne State University/Karmanos Cancer Institute, Detroit

Ascension Saint John Hospital, Detroit

Hurley Medical Center, Flint

Helen DeVos Children's Hospital at Spectrum Health, Grand Rapids

Spectrum Health at Butterworth Campus, Grand Rapids

Blank Children's Hospital, Des Moines

Children's Hospital of Wisconsin, Milwaukee

Saint Vincent Hospital Cancer Center Green Bay, Green Bay

Marshfield Medical Center-Marshfield, Marshfield

Children's Hospitals and Clinics of Minnesota - Minneapolis, Minneapolis

University of Minnesota/Masonic Cancer Center, Minneapolis

Advocate Lutheran General Hospital, Park Ridge

Loyola University Medical Center, Maywood

Advocate Children's Hospital-Oak Lawn, Oak Lawn

Rush University Medical Center, Chicago

University of Illinois, Chicago

Washington University School of Medicine, St Louis

Children's Mercy Hospitals and Clinics, Kansas City

University of Missouri - Ellis Fischel, Columbia

University of Nebraska Medical Center, Omaha

Tulane University Health Sciences Center, New Orleans

Children's Hospital New Orleans, New Orleans

University of Arkansas for Medical Sciences, Little Rock

University of Oklahoma Health Sciences Center, Oklahoma City

Natalie Warren Bryant Cancer Center at Saint Francis, Tulsa

Medical City Dallas Hospital, Dallas

UT Southwestern/Simmons Cancer Center-Dallas, Dallas

Scott and White Memorial Hospital, Temple

Baylor College of Medicine/Dan L Duncan Comprehensive Cancer Center, Houston

Methodist Children's Hospital of South Texas, San Antonio

University of Texas Health Science Center at San Antonio, San Antonio

Driscoll Children's Hospital, Corpus Christi

Dell Children's Medical Center of Central Texas, Austin

Texas Tech University Health Sciences Center-Amarillo, Amarillo

Covenant Children's Hospital, Lubbock

Children's Hospital Colorado, Aurora

Primary Children's Hospital, Salt Lake City

University of New Mexico Cancer Center, Albuquerque

Nevada Cancer Research Foundation CCOP, Las Vegas

Children's Hospital Los Angeles, Los Angeles

Mattel Children's Hospital UCLA, Los Angeles

UCLA / Jonsson Comprehensive Cancer Center, Los Angeles

Kaiser Permanente Downey Medical Center, Downey

Harbor-University of California at Los Angeles Medical Center, Torrance

Miller Children's and Women's Hospital Long Beach, Long Beach

City of Hope Comprehensive Cancer Center, Duarte

Rady Children's Hospital - San Diego, San Diego

Loma Linda University Medical Center, Loma Linda

Valley Children's Hospital, Madera

UCSF Medical Center-Parnassus, San Francisco

Lucile Packard Children's Hospital Stanford University, Palo Alto

University of California Davis Comprehensive Cancer Center, Sacramento

University of Hawaii Cancer Center, Honolulu

Legacy Emanuel Hospital and Health Center, Portland

Seattle Children's Hospital, Seattle

Madigan Army Medical Center, Tacoma

Providence Sacred Heart Medical Center and Children's Hospital, Spokane

Children's Hospital and Research Center at Oakland, Oakland

University of Connecticut, Farmington

Connecticut Children's Medical Center, Hartford

Yale University, New Haven

Eastern Maine Medical Center, Bangor

Dartmouth Hitchcock Medical Center, Lebanon

Hackensack University Medical Center, Hackensack

Saint Barnabas Medical Center, Livingston

Newark Beth Israel Medical Center, Newark

Saint Joseph's Regional Medical Center, Paterson

Overlook Hospital, Summit

Rhode Island Hospital, Providence

Sanford USD Medical Center - Sioux Falls, Sioux Falls

University of Vermont and State Agricultural College, Burlington

University of Alberta Hospital, Edmonton

British Columbia Children's Hospital, Vancouver

IWK Health Centre, Halifax

Kingston Health Sciences Centre, Kingston

Children's Hospital, London

Victoria Hospital, London

Hospital for Sick Children, Toronto

The Montreal Children's Hospital of the MUHC, Montreal

Allan Blair Cancer Centre, Regina

Saskatoon Cancer Centre, Saskatoon