Funding for this research was provided by:
(CA138819, CA138844, CA138822, CA138638)
Canadian Cancer Society
Received: 3 August 2017
Accepted: 16 February 2018
First Online: 18 April 2018
Ethics approval and consent to participate
: The Columbia University Medical Center Human Research Protection Office and institutional review boards (IRBs), the California Committee for the Protection of Human Subjects, the Mount Sinai Hospital Research Ethics Board, the University of Utah IRB, the Fox Chase Cancer Center IRB, the Children’s Hospital of Philadelphia IRB, and the University of Pennsylvania IRB approved the study. The girls’ mothers/guardians provided written informed consent, and the girls provided assent based on institutional standards.
: Not applicable.
: The authors declare that they have no competing interests.
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