Takizawa, Kohei
Ono, Hiroyuki
Yamamoto, Yorimasa
Katai, Hitoshi
Hori, Shinichiro
Yano, Tomonori
Umegaki, Eiji
Sasaki, Shunya
Iizuka, Toshiro
Kawagoe, Kei
Shimoda, Tadakazu
Muto, Manabu
Sasako, Mitsuru
Article History
Received: 15 July 2015
Accepted: 5 November 2015
First Online: 17 November 2015
Compliance with ethical standards
: All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with Helsinki Declaration of 1964 and later versions.
: The authors declare that they have no conflict of interest.