1 Department of Pediatrics, Children's National Hospital, Washington, DC, USA.
2 The George Washington University School of Medicine and Health Sciences, Washington, DC, USA.
3 Department of Paediatric and Child Health, University of Malawi College of Medicine, Blantyre, Malawi.
4 Department of Pediatric Neurology, George Washington University/ Children's National Medical Center; Washington DC, USA; Blantyre Malaria Project; Blantyre, Malawi, Street Address: Department of Neurology; 111 Michigan Avenue NW; Washington DC; 20010; USA.