- Correspondence to Dr Jinyoung Park, Department of Rehabilitation Medicine, Gangnam Severance Hospital, Rehabilitation Institute of Neuromuscular Disease, Yonsei University College of Medicine, Seoul, Republic of Korea;
- Received December 8, 2018
- Revision received May 1, 2019
- Accepted May 8, 2019
- First published June 14, 2019.
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