1. Department of Obstetrics and Gynecology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, Guangdong 510623, P.R. China
2. Department of Neurology, Guangzhou Hospital of TCM, Guangzhou Medical University, Guangzhou, Guangdong 510130, P.R. China
3. Department of Intensive Care Unit, Pingxiang People's Hospital of Southern Medical University, Pingxiang, Jiangxi 337055, P.R. China
4. Epilepsy Center and Department of Neurosurgery, The First Affiliated Hospital, Jinan University, Guangzhou, Guangdong 510623, P.R. China
5. Department of Neurology, The First Hospital of Changsha, Changsha, Hunan 410013, P.R. China