Department of Biomedical Informatics, University of Pittsburgh School of Medicine, The Offices at Baum, 5607 Baum Boulevard, BAUM 423, Rm 523, Pittsburgh, PA, 15206-3701, USA. eugene.tseytlin@gmail.com.|Department of Biomedical Informatics, University of Pittsburgh School of Medicine, The Offices at Baum, 5607 Baum Boulevard, BAUM 423, Rm 523, Pittsburgh, PA, 15206-3701, USA. mitchellkj@upmc.edu.|Department of Biomedical Informatics, University of Pittsburgh School of Medicine, The Offices at Baum, 5607 Baum Boulevard, BAUM 423, Rm 523, Pittsburgh, PA, 15206-3701, USA. legowski@bsc.gwu.edu.|Department of Biomedical Informatics, University of Pittsburgh School of Medicine, The Offices at Baum, 5607 Baum Boulevard, BAUM 423, Rm 523, Pittsburgh, PA, 15206-3701, USA. juc61@pitt.edu.|Department of Biomedical Informatics, University of Pittsburgh School of Medicine, The Offices at Baum, 5607 Baum Boulevard, BAUM 423, Rm 523, Pittsburgh, PA, 15206-3701, USA. chavang@upmc.edu.|Department of Biomedical Informatics, University of Pittsburgh School of Medicine, The Offices at Baum, 5607 Baum Boulevard, BAUM 423, Rm 523, Pittsburgh, PA, 15206-3701, USA. rebeccaj@pitt.edu.