Author Contributions: Dr Voltarelli had full access to all of the data in the study and takes responsibility for the integrity of the data and the accuracy of the data analysis.
Study concept and design: Voltarelli, Malmegrim, Foss, Squiers, Burt.
Acquisition of data: Voltarelli, Couri, Stracieri, Oliveira, Moraes, Pieroni, Coutinho, Malmegrim, Foss-Freitas, Simões, Foss, Squiers.
Analysis and interpretation of data: Voltarelli, Couri, Stracieri, Malmegrim, Foss-Freitas, Simões, Foss, Squiers, Burt.
Drafting of the manuscript: Voltarelli, Couri, Stracieri, Malmegrim, Simões, Squiers.
Critical revision of the manuscript for important intellectual content: Voltarelli, Couri, Oliveira, Moraes, Pieroni, Coutinho, Malmegrim, Foss-Freitas, Simões, Foss, Squiers, Burt.
Statistical analysis: Couri, Malmegrim, Squiers.
Obtained funding: Voltarelli, Malmegrim, Squiers, Burt.
Administrative, technical, or material support: Voltarelli, Stracieri, Malmegrim, Foss, Squiers.
Study supervision: Voltarelli, Malmegrim, Foss, Squiers.
Financial Disclosures: None reported.
Funding/Support: Research supported by the Brazilian Ministry of Health, FAEPA-HCRP, FUNDHERP, FAPESP, CNPq, FINEP, Genzyme Corporation, and Johnson & Johnson-LifeScan–Brazil.
Role of the Sponsor: The funding organizations did not participate in the design and conduct of the study; in the collection, management, analysis, and interpretation of the data; or in the preparation, review, or approval of the manuscript.
Acknowledgment: We are grateful to Edson Martinez, PhD, and Davi Aragon, MSc, Center for Quantitative Methods of the School of Medicine of Ribeirão Preto, University of São Paulo (CEMEQ-FMRP-USP) for statistical advice; to Lewis Joel Greene, PhD, and Elettra Greene, BA, for English review; and to the multiprofessional team of the Bone Marrow Transplantation Unit and the Regional Blood Center of the Hospital das Clínicas of Ribeirão Preto, University of São Paulo, Brazil. Individuals named in this acknowledgment received no compensation from a funding sponsor for their contribution to this article.