1. Department of Public Health, Kobe University Graduate School of Health Sciences, Hyogo, Japan.
2. Center for Infectious Diseases, Kobe University Graduate School of Medicine, Hyogo, Japan.
3. Indonesia-Japan Collaborative Research Center for Emerging and Re-emerging Infectious Diseases, Institute of Tropical Disease, Airlangga University, Surabaya, Indonesia.
4. Faculty of Medicine, Airlangga University, Surabaya, Indonesia.
5. Airlangga Hospital, Surabaya, Indonesia.