1. Department of Kidney DiseaseKawashima Hospital 1‐39 Kitasakoichiban‐cho, Tokushima, 770‐0011 Japan
2. Department of UrologyKawashima Hospital 1‐39 Kitasakoichiban‐cho, Tokushima, 770‐0011 Japan
3. Kamojima‐Kawashima Clinic 396‐3 Iioazahukui, Kamojima‐cho, Yoshinogawa, Tokushima, 776‐0033 Japan