- Correspondence to Dr Kosuke Kiyohara, Department of Public Health, Tokyo Women’s Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo 162-8666, Japan;
- Received December 8, 2016
- Revised April 4, 2017
- Accepted May 8, 2017
- First published June 10, 2017.
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.