1. Faculty of Human Sciences, School of Human Sciences, Waseda University, 2-579-15 Mikajima, Tokorozawa City, Saitama 359-1192, Japan
2. School of Health Innovation, Kanagawa University of Human Services, Research Gate Building TONOMACHI 2-A 2·3F, 3-25-10 Tonomachi, Kawasaki-ku, Kawasaki, Kanagawa, 210-0821, Japan
3. Graduate School of Business Administration, Keio University, Collaboration Complex Bldg., 4-1-1 Hiyoshi Kohoku-ku, Yokohama, Kanagawa 223-8526, Japan
4. Laboratory of International Wastewater-based Epidemiology, Graduate School of Engineering, The University of Tokyo, 2-11-16 Yayoi, Bunkyo-ku, Tokyo 113-0032, Japan
5. Independent Consultant, 1033-22 Minami-komatsu, Otsu-shi, Shiga 520-0502, Japan
6. Chair of Health Economics, Technical University of Munich, Georg-Brauchle-Ring 60/62, 80992, Munich, Germany