1. Department of General Surgery, Fujian Medical University Union Hospital, Fuzhou, People’s Republic of China
2. Department of obstetrics and gynecology, 900 Hospital of the Joint Logistics Team, Fuzhou, China
3. College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, China
4. Department of Oncology and Hematology and Division of Research, Kaiser Permanente, Santa Clara, CA, USA