1 Division of Global Health Equity, Brigham and Women's Hospital, Boston, MA 02115, USA; Partners In Health, Freetown, Sierra Leone. Electronic address: erichardson@bwh.harvard.edu.
2 Community-Based Initiative, Ministry of Health, Monrovia, Liberia; PREVAIL-III Study, National Institute of Allergy and Infectious Diseases, Monrovia, Liberia; A.M. Dogliotti College of Medicine, University of Liberia, Monrovia, Liberia.
3 Partners In Health, Freetown, Sierra Leone; UCSF School of Medicine, San Francisco, CA, USA.