Received: 11 December 2019
Accepted: 2 July 2020
First Online: 9 July 2020
Ethics approval and consent to participate
: Ethics approval (approval No. 215) was obtained from the Hayashibara Ethics Committee (Okayama, Japan). All the participants were informed about the purpose, methods, and possible risks of the study before giving their consent to participate.
: Not applicable.
: All the authors are employees of Hayashibara Co. Ltd., the study sponsor. Hayashibara beared all the costs of this test. The authors declare that they have no other conflict of interest.