Conflict of interest
Tetsuya Tatsuta, Tatsuya Mikami, Daisuke Chinda, Kazuki Akitaya, Shohei Igarashi, Keisuke Hasui, Hidezumi Kikuchi, Hiroto Hiraga, Manabu Sawaya, Hirotake Sakuraba, Tadashi Shimoyama, Tosihiro Haga, Hiroshi Kijima, and Shinsaku Fukuda declare that they have no conflict of interest.
Human rights
All procedures followed have been performed in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki and its later amendments.
Informed consent
Informed consent was obtained from this patient.