1 Mahidol Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Bangkok 10400, Thailand. Electronic address: nickw@tropmedres.ac.
2 Drugs for Neglected Diseases Initiative, Geneva, Switzerland.
3 Dev Care Foundation, Dhanmondi Residential Area, Dhaka, Bangladesh.
4 Infectious Diseases Data Observatory, Centre for Tropical Medicine and Global Health, University of Oxford, Oxford, UK.