Funding for this research was provided by:
Terumo Foundation for Life Sciences and Arts
MEXT/JSPS KAKENHI B (26293475)
MEXT/JSPS KAKENHI A (17H01613)
The Yamaji Fumiko Nursing Research Fund
The Japan Health Foundation
Text and Data Mining valid from 2019-10-12
Received: 29 May 2018
Accepted: 12 September 2019
First Online: 12 October 2019
Ethics approval and consent to participate
: This study was approved by the Institutional Review Board of St. Luke’s International University, Tokyo, Japan (No. 15–085). The date of approval was February 1, 2016.This study was registered in the Clinical Trials Registry of the University Hospital Medical Information Network in Japan (UMIN 000020797). The date of disclosure of the study information and trial start was February 15, 2016.The details of this research such as purpose and methods were explained by the researchers to the participants, and written informed consent was obtained from all the participants.
: Not applicable.
: The authors declare that they have no competing interests.