1. Guangzhou Institute of DermatologyGuangzhou510095China
2. Department of PathologyFoshan Chancheng Central HospitalFoshan528031GuangdongChina
3. Department of ObstetricsBaoan Maternal and Child Health Hospital, Jinan UniversityShenzhen518100China
4. Shenzhen Key Laboratory of Birth Defects in Baoan Maternal and Child Health Care Affiliated Hospital in Jinan UniversityShenzhenChina