Received: 5 November 2019
Accepted: 24 February 2020
First Online: 13 April 2020
Ethics approval and consent to participate
: I would like to declare on behalf of my co-authors that the work described is an original review that has not been published previously and is not under consideration for publication elsewhere, in whole or in part.
: The manuscript has been approved by all authors for publication. All listed authors have approved the enclosed manuscript.
: Author Ping-Ju Tsai and Pei-Hsuan Chen were employed by the company KING-PREBIOTICS BIOTECHNOLOGY (TW) CO., Ltd. And author Manxiang Ye was employed by the company New Francisco (Yunfu City) Biotechnology Co., Ltd. The remaining authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. The authors declare that they have no competing interests.