1 Division of General Internal Medicine, Department of Internal Medicine, St. Marianna University School of Medicine, 2-16-1, Sugao, Miyamae, Kawasaki, Kanagawa 216-8511, Japan.
2 Division of General Internal Medicine, Department of Internal Medicine, St. Marianna University School of Medicine, 2-16-1, Sugao, Miyamae, Kawasaki, Kanagawa 216-8511, Japan. email: e103007c@yokohama-cu.ac.jp.