Brian S. Caffo,  Department of Biostatistics, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland, United States of America

Marie DavidianDepartment of Statistics, North Carolina State University, Raleigh, North Carolina, United States of America

Xiao-Li Meng, Department of Statistics, Harvard University, Cambridge, Massachusetts, United States of America

Bin YuDepartment of Statistics and Department of Electrical Engineering and Computer Science, University of California Berkeley, Berkeley, California, United States of America

Nancy Reid,  Department of Statistical Sciences, University of Toronto, Toronto, Ontario, Canada