1. KIT Biomedical Research, Royal Tropical Institute, Amsterdam, The Netherlands; and Analytical Chemistry and Forensic Science, Van 't Hoff Institute for Molecular Sciences, University of Amsterdam, Amsterdam, The Netherlands
2. Department of Toxicology, Research Institute NUTRIM, Maastricht University, Maastricht, The Netherlands
3. Desmond Tutu TB Centre, Department of Paediatrics and Child Health, Stellenbosch University, Tygerberg, Cape Town, South Africa
4. KIT Biomedical Research, Royal Tropical Institute, Amsterdam, The Netherlands; Analytical Chemistry and Forensic Science, Van 't Hoff Institute for Molecular Sciences, University of Amsterdam, Amsterdam, The Netherlands