- Received January 1, 2012, and in revised form September 2, 2012.
- Accepted for publication September 4, 2012.
- Reprints: Kyu-Nam Kim, MD, Department of Family Practice and Community Health, Ajou University School of Medicine, 164 Worldcup-ro, Youngtong-gu, Suwon, Gyeonggi-do, Republic of Korea. E-mail: .
- First published December 15, 2015.
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.