Article Information
History
- June 13, 2017.
Copyright
The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY-NC-ND 4.0 International license.
Author Information
- 1 Department of Epidemiology and Biostatistics, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
- 2 Department of Biostatistics, University of Michigan, Ann Arbor, Michigan 48109, USA.
- 3 Center for Statistical Genetics, University of Michigan, Ann Arbor, Michigan 48109, USA.
- ↵*Correspondence and requests for materials should be addressed to XZ (email: xzhousph{at}umich.edu)