Text and Data Mining valid from 2020-03-14
Received: 16 May 2019
Accepted: 28 February 2020
First Online: 14 March 2020
Ethics approval and consent to participate
: Data acquisition and analysis were performed in accordance with ethical guidelines and approved by the Yokohama City Minato Red Cross Hospital Research Ethical Committee (No. 2018–77). All patients provided written informed consent for participation.
: Not applicable.
: The authors declare that they have no competing interests.