1. Department of Second Gynecology Cangzhou Central Hospital Cangzhou Hebei Province People's Republic of China
2. Department of Endocrinology The Fourth People's Hospital of Jinan City Tianqiao District Jinan Shandong Province People's Republic of China
3. School of Bioprocess Engineering Universiti Malaysia Perlis Arau Perlis 02600 Malaysia
4. Institute of Nano Electronic Engineering Universiti Malaysia Perlis Kangar Perlis 01000 Malaysia
5. Department of Oral & Craniofacial Sciences Faculty of Dentistry University of Malaya Kuala Lumpur Malaysia
6. Department of Gynecology Endocrinology Maternal and Child Health Care of Shandong Province Jinan Shandong Province People's Republic of China