Accepted for Publication: January 18, 2012.
Author Contributions:Study concept and design: Murray-Kolb, Katz, Cole, LeClerq, Tielsch, and Christian. Acquisition of data: Murray-Kolb, Khatry, Cole, and Christian. Analysis and interpretation of data: Murray-Kolb, Katz, Schaefer, Tielsch, Morgan, and Christian. Drafting of the manuscript: Murray-Kolb. Critical revision of the manuscript for important intellectual content: Katz, Schaefer, Cole, LeClerq, Tielsch, and Christian. Statistical analysis: Schaefer, Christian, Morgan. Obtaining funding: Murray-Kolb, Katz, Cole, and Christian. Administrative, technical, and material support: Murray-Kolb, Khatry, Katz, Schaefer, Cole, LeClerq, and Christian. Study supervisor: Christian.
Financial Disclosure: None reported.
Funding/Support: This work was performed by the Center for Human Nutrition, Department of International Health of the Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, in collaboration with the National Society for the Prevention of Blindness, Kathmandu, Nepal, with funding from grant R01 HD050254-01 from the National Institutes of Health, Bethesda, Maryland, and the Bill and Melinda Gates Foundation, Seattle, Washington. The Sight and Life Research Institute, Baltimore, provided additional support for the study. The preschool child iron and zinc supplementation study was funded by grant HD 38753 from the National Institutes of Health and the Bill and Melinda Gates Foundation.
Additional Contributions: Apart from the authors, all members of the Nepal study team helped in the successful implementation of the study, including the late deputy director Sharada Ram Shrestha, field manager, coordinator, supervisors, psychology research assistants (Keshav Mishra, MS, Nar Bahadur, MS, Mona Lisa Pradhan, MS, Sumitra Rai, MS, and Bikram Sherchan, MS), and the team leader interviewers. May Baydoun, PhD, Luke Mullany, PhD, and Scott Zeger, PhD, are acknowledged for providing statistical consultation. We also thank the late John Beard who played an integral role in the study concept and design and obtaining the funding.