1. Navrongo Health Research Centre (NHRC), Navrongo, Ghana
2. Julius Global Health, Julius Center for Health Sciences and Primary Care, University Medical Centre Utrecht, Utrecht University, Utrecht, The Netherlands
3. Sydney Brenner Institute for Molecular Bioscience and Division of Human Genetics, School of Pathology, University of the Witwatersrand, Johannesburg, South Africa
4. Department of Chemical Pathology, National Health Laboratory Service, University of the Witwatersrand, Johannesburg, South Africa