- Correspondence to Dr Jung-Der Wang, Department of Public Health, College of Medicine, National Cheng Kung University, Tainan, Taiwan;
- Received August 6, 2020
- Revised December 27, 2020
- Accepted January 3, 2021
- First published January 22, 2021.
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.