1. Center for Vaccine Development and Global Health, University of Maryland School of Medicine , Baltimore, Maryland , USA
2. Department of Epidemiology, School of Public Health, University of Michigan , Ann Arbor, Michigan , USA
3. Department of Global Health, Boston University School of Public Health , Boston, Massachusetts , USA
4. Malaria Alert Centre, Kamuzu University of Health Sciences , Blantyre , Malawi
5. University of Maryland School of Medicine , Baltimore, Maryland , USA
6. College of Osteopathic Medicine, Michigan State University , East Lansing, Michigan , USA