Zhengzhou University, Shenzhen University - Health Sciences Center, Independent, Zhengzhou University, Shenzhen University - Health Sciences Center, Shenzhen University - Health Sciences Center, Shenzhen University - Health Sciences Center, Zhengzhou University, Shenzhen University - Health Sciences Center, Zhengzhou University, Zhengzhou University, Zhengzhou University, Zhengzhou University, Shenzhen University - Department of Biostatistics and Epidemiology, Shenzhen University - Health Sciences Center, Shenzhen University - Health Sciences Center, affiliation not provided to SSRN and Zhengzhou University - College of Public Health