1. Department of StatisticsUniversity of Missouri Columbia Missouri
2. Department of Mathematics and StatisticsThe University of North Carolina at Charlotte Charlotte North Carolina
3. Division of Clinical and Translational Sciences, Department of Internal MedicineUniversity of Texas Health Science Center at Houston Houston Texas
4. School of Statistics and MathematicsZhongnan University of Economics and Law Wuhan China
5. Department of Epidemiology and Cancer ControlSt. Jude Children's Research Hospital Memphis Tennessee