Machida, Yumiko
Nakashizuka, Hiroyuki http://orcid.org/0000-0001-5801-8893
Shoji, Jun
Shimada, Hiroyuki
Article History
Received: 31 July 2020
Accepted: 29 October 2020
First Online: 10 November 2020
Ethics approval and consent to participate
: This study complied with the tenets of the Declaration of Helsinki. Ethics approval was not required because we used eyes butchered from pigs for food.
: Not applicable.
: The authors declare that they have no competing interests.