Received: 17 May 2019
Accepted: 29 October 2019
First Online: 23 December 2019
Ethics approval and consent to participate
: This study will be conducted in compliance with the Declaration of Helsinki. Written informed consent will be obtained from each participant after they have been screened for eligibility. Protocol modifications will be approved by the medical research ethics committee of the Hospital of the Kyoto Prefectural University of Medicine, reference number ERB-C-1203. This study has been registered in the University Hospital Medical Information Network clinical trials registry (UMIN000028809).
: Not applicable.
: The authors declare that they have no competing interests.