Division of Dermatology, Tsuruse Orthopedic Clinic, Saitama, Japan

Corresponding author: Yasuhiro Horiuchi, Yasuhiro Horiuchi, M.D., Tsuruse, Miyoshi, Saitama Japan. E-mail: [email protected]

Received 5 December, 2021

Accepted 17 January, 2022

Conflicts of interest: The author declares no conflicts of interest.

This is an open access article distributed under the terms of the Creative Commons Attribution-Non Commercial-No Derivatives License 4.0 (CCBY-NC-ND), where it is permissible to download and share the work provided it is properly cited. The work cannot be changed in any way or used commercially without permission from the journal. http://creativecommons.org/licenses/by-nc-nd/4.0