About the Authors

Margaret J Mackinnon
School of Biological Sciences, University of Edinburgh, Edinburgh, United Kingdom

Margaret J Mackinnon
Department of Pathology, University of Cambridge, Cambridge, United Kingdom

Tabitha W Mwangi, Robert W Snow, Kevin Marsh, Thomas N Williams
Kenya Medical Research Institute/Wellcome Trust Programme, Centre for Geographic Medicine Research, Coast, Kilifi District Hospital, Kilifi, Kenya

Robert W Snow, Kevin Marsh, Thomas N Williams
Nuffield Department of Medicine, John Radcliffe Hospital, Oxford, United Kingdom

Thomas N Williams
Department of Paediatrics, John Radcliffe Hospital, Oxford, United Kingdom

Corresponding Author

Mjm88@cam.ac.uk

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

TWM, KM, and TNW conceived and conducted the mild disease cohort study, and pedigree data were collected by MJM and TWM. RWS and TNW designed and conducted the birth cohort study. Statistical analyses were conducted by MJM. Patients were enrolled by TWM, RWS, and TNW. MJM and TNW wrote the paper.