About the Authors

Yi Xing

Affiliations Department of Statistics, Stanford University, Stanford, California, United States of America, Department of Internal Medicine, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, Iowa, United States of America

Karen Kapur

Affiliation Department of Statistics, Stanford University, Stanford, California, United States of America

Wing Hung Wong

To whom correspondence should be addressed. E-mail: whwong@stanford.edu

Affiliation Department of Statistics, Stanford University, Stanford, California, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: YX WW. Performed the experiments: YX KK. Analyzed the data: YX WW KK. Wrote the paper: YX WW.