Funding for this research was provided by:
Institutional funding (Base-33)
Received: 15 August 2020
Accepted: 12 October 2020
First Online: 20 October 2020
Ethics approval and consent to participate
: Institutional Ethic Committee approved this study (M29-053) and written informed consent was obtained in each patient. The Declaration of Helsinki and its subsequent revisions were followed.
: Not applicable.
: All authors have no conflict of interest.
: Yakult Central Institute: analysis and preparation of paper.