The responsible ethics committee approved this data-sharing plan.
The institutional board approved this retrospective data analysis.
The Institutional Review Board of the University of Washington approved this secondary data analysis and waived the need for additional consent.
The Committee on the Use of Humans as Experimental Subjects, the institutional review board at the Massachusetts Institute of Technology in Cambridge, MA, approved this study before data collection.
The Health Research Ethics Board of the University of Alberta approved this study, including data collection and parental informed consent forms.
The University of Waterloo Office of Research Ethics and appropriate School Board Ethics committees approved this study and data collection procedures.
Institutional Review Boards of the University of South Carolina, the Centres for Disease Control and Prevention, and the National Cancer Institute approved this project's data collection procedures.
The Research Review Committee of Jinju Health College approved this study prior to data collection.
The Research and Ethics Committee of Universiti Sains Malaysia approved this study and all data pertaining to the study were kept confidential.
A local ethics committee approved this retrospective study and data were recorded anonymously.
