1Korea University College of Medicine, Inchon-ro, Seongbuk-gu, Seoul, Korea
2Division of Rheumatology, Department of Internal Medicine, Korea University Guro Hospital, Gurodong-ro, Guro-gu, Seoul, Korea
3Korea University College of Nursing, Anam-ro, Seongbuk-gu, Seoul, Korea
4Department of Physical Education, Graduate School of Inchon National University, Academy-ro, Yeonsu-gu, Inchon, Korea
5Division of Rheumatology, Department of Internal Medicine, Korea University Ansan Hospital, Jeokgeum-ro, Danwon-gu, Ansan-si, Gyeonggi-do, Korea.
Address correspondence to: Sung Jae Choi, MD, PhD, Division of Rheumatology, Department of Internal Medicine, Korea University Ansan Hospital, 123, Jeokgeum-ro, Danwon-gu, Ansan-si, Gyeonggi-do 15355, Korea. E-mail: [email protected]
Received 27 July, 2018
Revised 29 October, 2018
Accepted 29 October, 2018
JHJ and CHB contributed equally to this work.
Funding/support: None reported.
Financial disclosure/conflicts of interest: None reported.