1. Graduate School of Life Science, Hokkaido University, Sapporo 060-0808, Japan
2. Laboratory of Physiology, Atmosphere and Ocean Research Institute, University of Tokyo, Chiba 277-8564, Japan
3. Graduate School of Fisheries Science, Hokkaido University, Hakodate 041-8611, Japan
4. Faculty of Science, Hokkaido University, Sapporo 060-0808, Japan
5. Division of Nephrology, Department of Medicine, University of California, San Diego, California 92093, United States
6. Center for Academic Research and Training in Anthropogeny (CARTA), University of California, San Diego, California 92093, United States