1. School of Statistics and Management; Shanghai University of Finance and Economics; Shanghai China
2. Department of Biostatistics; School of Public Health, Yale University; New Haven Connecticut United States of America
3. Division of Epidemiology and Biostatistics; University of Illinois at Chicago; Chicago Illinois United States of America
4. Department of Statistics and Actuarial Science; University of Iowa; Iowa City Iowa United States of America
5. Department of Clinical Science; University of Texas Southwestern; Dallas Texas United States of America