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Correspondence to: John B. Mason, Department of Global Community Health and Behavioral Sciences, School of Public Health and Tropical Medicine, Tulane University, 1440 Canal Street, Suite 2300, New Orleans, LA 70112, USA, Email: masoni@tulane.edu
All authors made substantive contributions to drafting and revising this manuscript; JBM wrote the first and final drafts.
We declare that we have no conflict of interest.
The landscaping study and efficacy reviews that contributed to this manuscript were supported by a grant from the Bill & Melinda Gates Foundation to Emory University.
© 2014 John B. Mason et al.