1. Department of Physical Medicine & Rehabilitation, Wonkwang University School of Medicine, Iksan, Republic of Korea
2. Institute of Wonkwang Medical Science, Wonkwang University School of Medicine, Iksan, Republic of Korea
3. Department of Physical Medicine & Rehabilitation, Research Institute of Medical Science, Chonnam National University Medical School & Hospital, Gwangju, Republic of Korea
4. Center for Integrative Medicine, Institute of Medical Science, Wonkwang University, Iksan, Republic of Korea
5. Complementary Medicine, Peninsula Medical School, Universities of Exeter & Plymouth, 25 Victoria Park Road, Exeter, EX2 4NT, United Kingdom