Authors:Christina R. Paganelli, RTI IntNorman J. Goco, RTI IntElizabeth M. McClure, RTI IntKathryn K. Banke, Centers for Disease Control and PreventionDianna M. Blau, Centers for Disease Control and PreventionRobert Breiman, Emory UniversityClara Menendez, University of BarcelonaNatalia Rakislova, University of BarcelonaQuique Bassat, University of Barcelona