1Department of Rehabilitation Medicine, Daegu Fatima Hospital, Daegu, South Korea
Disclosure: This research was supported by Basic Science Research Program through the National Research Foundation of Korea(NRF) funded by the Ministry of Science, ICT and Future Planning (NRF- 2017R1D1A1B03033127)
No commercial party having a direct financial interest in the results of the research supporting this article has or will confer a benefit upon the authors or upon any organization with which the authors are associated.
Conflict of interest: None
The authors report no conflict of interest or financial support.
**Address corresponding author: Donghwi Park, M.D. Department of Rehabilitation Medicine, Department of Rehabilitation Medicine, Daegu Fatima Hospital, Ayangro 99, Dong gu, Daegu 41199, Republic of Korea (e-mail: email@example.com),