1. Department of Obstetrics and Gynecology National Taiwan University Taipei Taiwan
2. Department of Obstetrics and Gynecology National Taiwan University Hospital Hsin‐Chu City Taiwan
3. Graduate Institute of Epidemiology and Preventive MedicineCollege of Public HealthNational Taiwan University Taipei Taiwan
4. Taiwan Cancer Registry Taipei Taiwan
5. Department of Public Health College of Medicine and Big Data Research Centre Fu‐Jen Catholic University New Taipei City Taiwan
6. Taiwan Blood Services Foundation Taipei Taiwan
7. Graduate Institute of Clinical MedicineNational Taiwan University Taipei Taiwan
8. Graduate Institute of OncologyCollege of MedicineNational Taiwan University Taipei Taiwan