Affiliation: | 1. School of Medicine, University of Pittsburgh, , Pittsburgh, PA, U.S.A.;2. Biostatistics, Epidemiology, and Research Design Core, University of Texas Health Sciences Center, , Houston, TX, U.S.A.;3. Department of Clinical Sciences, University of Texas Southwestern Medical Center, , Dallas, TX, U.S.A.;4. Center for Clinical and Translational Science and Training, University of Cincinnati, , Cincinnati, OH, U.S.A.;5. Department of Emergency Medicine, University of Cincinnati, , Cincinnati, OH, U.S.A.;6. Department of Medicine, University of Alabama at Birmingham, , Birmingham, AL, U.S.A.;7. Biostatistics, Epidemiology, and Research Design Core, Rockefeller University, , New York, NY, U.S.A.;8. Department of Preventive Medicine, Northwestern University, , Chicago, IL, U.S.A.;9. Department of Biostatistics and Bioinformatics, Duke University, , Durham, NC, U.S.A.;10. Biostatistics Department, University of Wisconsin—Madison, , Madison, WI, U.S.A. |