1 Division of Nephrology and Hypertension, Department of Internal Medicine, St. Marianna University Yokohama City Seibu Hospital, 1197-1 Yasashico, Asahi-ku, Yokohama, Kanagawa, Japan.
2 Division of Nephrology and Hypertension, Department of Internal Medicine, St. Marianna University Yokohama City Seibu Hospital, 1197-1 Yasashico, Asahi-ku, Yokohama, Kanagawa, Japan. [email protected].