1. Department of Pediatric Infectious Diseases, Emory University School of Medicine, Atlanta, Georgia, USA
2. Department of Pediatric Infectious Diseases, Children’s Healthcare of Atlanta, Georgia, Atlanta, USA
3. Center for Global Health, Massachusetts General Hospital, Boston, Massachusetts, USA
4. Department of Pediatrics, University of KwaZulu-Natal Nelson Mandela School of Medicine, Durban, South Africa
5. Mahatma Gandhi Hospital, KwaMashu, South Africa
6. Harvard Medical School, Boston, Massachusetts, USA