1. Department of Obstetrics and Gynecology, Chang Gung Memorial Hospital at Taipei and College of Medicine, Chang Gung University, Taoyuan, Taiwan, Republic of China
2. Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan, Republic of China
3. Graduate Institute of Life Sciences, National Defense Medical Center, Taipei, Taiwan, Republic of China
4. Department of Physical Medicine and Rehabilitation, Cheng Hsin General Hospital, Taipei, Taiwan, Republic of China
5. Department of Neurology, Yale University School of Medicine, New Haven, Connecticut, USA
6. Departments of Physiology and Biophysics, National Defense Medical Center, Taipei, Taiwan, Republic of China