Article History
Received: 3 October 2019
Revised: 16 January 2020
Accepted: 27 January 2020
First Online: 31 January 2020
Compliance with ethical standards
:
: The authors declare that they have no conflicts of interest.
: This prospective study was conducted after the approval of the Institutional Review Board of Osaka University Hospital (09297-19). The study adhered to the 1964 Helsinki declaration and its later amendments.
: All patients were informed about the nature and possible consequences of the study; following which, they provided written informed consent.