Affiliation: | 1. Department of Obstetrics & Gynecology, People's Hospital of Nanhai Economic Development Zone, Foshan 528222, China;2. Medical Research Center, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China;3. Department of Internal Medicine, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China |