Received: 13 July 2018
Revised: 14 January 2019
Accepted: 18 January 2019
First Online: 30 January 2019
Compliance with ethical standards
: Naoko Sawada, Tomoko Nakao, Masao Daimon, Kan Nawata, Mariko Tanaka, and Issei Komuro have no conflict of interest to declare.
: We performed all procedures in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the tenets of the Helsinki Declaration of 1964 and later revisions.
: We obtained an informed consent from the patient for her participation in the study and the publication of the results with any accompanying images.