1. Department of Mathematics and Statistics University of North Carolina at Charlotte Charlotte NC 28223 U.S.A.
2. Biostatistics and Research Decision Sciences‐Asia Pacific MSD R&D (China) Co., Ltd China
3. Department of Biostatistics University of Washington Seattle WA 98195 U.S.A.
4. Fred Hutchinson Cancer Research Center Seattle WA 98109 U.S.A.
5. Department of Mathematics and Statistics University of North Florida Jacksonville FL 32224 U.S.A.
6. East China University of Science and Technology China