1 Department of Health Services, Policy and Practice, Brown University, Providence, RI 02903, USA. Electronic address: Becky_Genberg@brown.edu.
2 Department of Biostatistics, Brown University, Providence, RI 02903, USA; Academic Model Providing Access to Healthcare (AMPATH), Eldoret, Kenya.
3 Academic Model Providing Access to Healthcare (AMPATH), Eldoret, Kenya; Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada; School of Medicine, Moi University, College of Health Sciences, Eldoret, Kenya; Fairbanks School of Public Health, Indiana University, Indianapolis, IN, USA; Regenstrief Institute, Indianapolis, IN, USA.