1. Department of Thoracic Medicine, Taipei Medical University Hospital, Taipei 110, Taiwan, Republic of China
2. Department of Materials and Science Engineering, National Taiwan University of Science and Technology, 43, Sec. 4, Keelung Road, Taipei 106, Taiwan, Republic of China
3. Institute of Preventive Medicine, National Defense Medical Center, 161, Sec. 6, Minquan East Road, Neihu Dist., New Taipei City 114, Taiwan, ROC
4. Department of Chemical Engineering, Feng Chia University, 100, Wenhwa Road, Seatwen, Taichung 40724, Taiwan, ROC
5. Department of Obstetrics and Gynecology, Taichung Veterans General Hospital, Taichung 40705, Taiwan
6. Department of Obstetrics and Gynecology, National Yang-Ming University School of Medicine, Taipei 112, Taiwan