1. Department of Clinical Tropical Medicine , Faculty of Tropical Medicine , Mahidol University , Bangkok 10400 , Thailand
2. Department of Molecular Tropical Medicine and Genetics , Faculty of Tropical Medicine , Mahidol University , Bangkok 10400 , Thailand
3. Mahidol Oxford Research Unit, Faculty of Tropical Medicine , Mahidol University , Bangkok 10400 , Thailand
4. Centre for Tropical Medicine , Nuffield Department of Medicine, Churchill Hospital , Oxford OX3 7BN , UK
5. Department of Biochemistry , Faculty of Medicine , Chulalongkorn University , Bangkok , 10330 , Thailand
6. Institut Pasteur, Laboratoire de la Génétique de la réponse aux infections chez l’homme , Paris 75015 , France
7. Department of Tropical Hygiene , Faculty of Tropical Medicine , Mahidol University , Bangkok 10400 , Thailand