1. Department of Obstetrics & Gynecology, Inner Mongolia People’s Hospital, Inner Mongolia 010017, China
2. Department of Oncology, Chang’an District Hospital, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, Shanxi Province 710100, China
3. Shenzhen International Travel Health Care Center, Shenzhen Customs District Port Outpatient Clinics, Shenzhen Customs District, Shenzhen 518033, China