1 Department of Physical & Rehabilitation Medicine, College of Medicine, Inha University School of Medicine, 7-206 3-Ga, Shinheung-Dong, Jung-Gu, Incheon, 400-711, Republic of Korea.
2 Department of Hemato-Oncology, College of Medicine, Inha University School of Medicine, Incheon, Republic of Korea.
3 Department of Physical & Rehabilitation Medicine, College of Medicine, Inha University School of Medicine, 7-206 3-Ga, Shinheung-Dong, Jung-Gu, Incheon, 400-711, Republic of Korea. drjoakl@gmail.com.