Funding for this research was provided by:
National Institutes of Health (U01AI069923)
Received: 30 November 2017
Accepted: 25 April 2018
First Online: 8 May 2018
Ethics approval and consent to participate
: Institutional Ethics Review Boards from all sites (IRB00002014- Comité de Bioética Fundación Huésped IRB -Argentina-; IRB00004170- Comite - CEP IPEC -Brazil-; IRB00011115- Comité Ético Científico Servicio de Salud Metropolitano Central IRB–Chile-, IRB00003070- Unidad de Investigacion Cientifica IRB – Biomedical–Honduras-, IRB00001910- Instituto Nacional de Ciencias Medicas y Nutricion Salvador Zubiran IRB -Mexico) and IRB00000475- Vanderbilt University Health Science Committee IRB - approved the project, waiving the requirement for individual patient informed consent.
: The authors declare that they have no conflicts of interest.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.