1. 1Global Programs for Research and Training, Nairobi, Kenya
2. 2Kenya Medical Research Institute, Nairobi, Kenya
3. 3Institute for Global Health Sciences, University of California, San Francisco, CA, USA
4. 4Migori County Government, Migori, Kenya
5. 5Migori County Referral Hospital, Migori, Kenya
6. 6Department of Epidemiology and Biostatistics, University of California, San Francisco, CA, USA