1. Chinese Evidence‐based Medicine Center, West China Hospital Sichuan University Chengdu China
2. Department of Statistics Florida State University Tallahassee Florida USA
3. UQ Centre for Clinical Research, Faculty of Medicine University of Queensland Herston Australia
4. Ministry of Education Key Laboratory for Population Health Across‐life Cycle & Anhui Provincial Key Laboratory of Population Health and Aristogenics & School of Public Health Anhui Medical University Anhui China