1. Department of Microbiology and Oncology; Graduate School of Medicine; University of the Ryukyus; Nishihara Okinawa Japan
2. Transdisciplinary Research Organization for Subtropics and Island Studies; University of the Ryukyus; Nishihara Okinawa Japan
3. Department of Pathology; Institute of Tropical Medicine; Nagasaki University; Nagasaki Japan
4. Theravalues Corporation; Tokyo Japan