**Author details**

Ryuji Sakakibara\* , Fuyuki Tateno, Masahiko Kishi and Yohei Tsuyusaki *Neurology, Internal Medicine, Sakura Medical Center, Toho University, Sakura, Japan* 

Tomoyuki Uchiyama and Tatsuya Yamamoto *Neurology, Chiba University, Chiba, Japan* 

Tomonori Yamanishi *Urology, Dokkyo Medical College, Tochigi, Japan* 
