C-H. Chen a, b, c, d, Y-J. Chen a, b, d, e, Y-T. Jao f, C. Chin g, H-F. Hsu a, P-L. Lu b, g, h, ⁎ 
a Department of Physical Medicine and Rehabilitation, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
b College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
c Department of Physical Medicine and Rehabilitation, Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung, Taiwan
d Orthopaedic Research Centre, Kaohsiung Medical University, Kaohsiung, Taiwan
e Department of Physical Medicine and Rehabilitation, Kaohsiung Municipal Siaogang Hospital, Kaohsiung, Taiwan
f Infection Control Centre, Kaohsiung Medical University, Kaohsiung, Taiwan
g Department of Laboratory Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
h Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan