Bipin Adhikari1, Shiva Raj Mishra2, Kim Natasha Dirks3. 1. Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, Oxford OX1 3SY, UK. Electronic address: biopion@gmail.com. 2. Nepal Development Society, Chitwan, Nepal. 3. School of Population Health, Faculty of Medical and Health Sciences, The University of Auckland, Auckland, New Zealand.