Department of Population Health Sciences, Virginia Tech, Blacksburg, VA, United States of America.|Network Dynamics and Simulation Science Lab, Biocomplexity Institute, Virginia Tech, Blacksburg, VA, United States of America.|Network Dynamics and Simulation Science Lab, Biocomplexity Institute, Virginia Tech, Blacksburg, VA, United States of America.|Network Dynamics and Simulation Science Lab, Biocomplexity Institute, Virginia Tech, Blacksburg, VA, United States of America.|Department of Population Health Sciences, Virginia Tech, Blacksburg, VA, United States of America.|Department of Population Health Sciences, Virginia Tech, Blacksburg, VA, United States of America.