There were errors in the author affiliations. The affiliations should appear as shown here:
Chien-Cheng Chen1,2, Tai-Ho Hung3, Yen-Ho Wang4, Chii-Wann Lin1, Pei-Yi Wang2, Chun-Yen Lee2, Szu-Fu Chen2,5*
1 Institute of Biomedical Engineering, National Taiwan University Taipei, Taiwan, Republic of China, 2 Department of Physical Medicine & Rehabilitation, Cheng Hsin General Hospital, Taipei, Taiwan, Republic of China, 3 Department of Obstetrics and Gynecology, Chang Gung Memorial Hospital at Taipei and College of Medicine, Chang Gung University, Taipei, Taiwan, Republic of China, 4 Department of Physical Medicine & Rehabilitation, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan, Republic of China, 5 Departments of Physiology and Biophysics, National Defense Medical Center, Taipei, Taiwan, Republic of China
Footnotes
Competing Interests: No competing interests declared.