Horiuchi, Kiyomi
Yoshida, Yusaku
Okamoto, Takahiro
Article History
Received: 21 January 2019
Accepted: 14 May 2019
First Online: 5 June 2019
Compliance with ethical standards
:
: Since the present study used information from published articles only and did not procure any data at the individual patient level, ethical approval was not required [CitationRef removed].
: Kiyomi Horiuchi and the co-authors have no conflicts of interest to declare.