1School of Tropical Medicine and Global Health (TMGH), Nagasaki University, 1–12-4 Sakamoto, Nagasaki, 852–8523 Japan
2Institute of Tropical Medicine, Nagasaki University, 1–12-4 Sakamoto, Nagasaki, 852–8523 Japan
3Siddhi Memorial Hospital, Bhaktapur, Nepal
4Present address: Michio Yasunami, Life Science Institute, Saga-Ken Medical Centre Koselkan, Saga, Japan
5Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
6Clinical Sciences, Liverpool School of Tropical Medicine, Liverpool, UK
7Institute of Infection and Global Health, University of Liverpool, Liverpool, UK
© The Author(s) 2020
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