Bibliographical noteFunding Information:
Haitao Chu is Research Associate Professor, Department of Biostatistics and the Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC 27516 (E-mail: email@example.com). Lei Nie is Mathematical Statistician, Office of Biostatistics, Food and Drug Administration, Silver Spring, MD 20993 (E-mail: firstname.lastname@example.org). Dr. Chu was supported in part by Lineberger Cancer Center Core Grant CA16086 from the U.S. National Cancer Institute. The authors thank the editor for his helpful comments and suggestions.
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