1 Department of Health Outcomes and Biomedical Informatics, University of Florida, PO Box 100177, Gainesville, Florida, 32610-0177, USA. Electronic address: mcardel@ufl.edu.
2 Department of Pediatrics, PO Box 800386, University of Virginia Health System, Charlottesville, Virginia, 22908-0386, USA. Electronic address: MDD5Z@hscmail.mcc.virginia.edu.
3 Department of Health Outcomes and Biomedical Informatics, University of Florida, PO Box 100177, Gainesville, Florida, 32610-0177, USA. Electronic address: matthewgurka@ufl.edu.