Published on in Vol 7, No 2 (2018): February
1 Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, United States
2 Johns Hopkins University School of Medicine, Johns Hopkins University, Baltimore, MD, United States
3 Welch Center for Prevention, Epidemiology, & Clinical Research, Johns Hopkins University, Baltimore, MD, United States
4 Department of Applied Mathematics and Statistics, Whiting School of Engineering, Johns Hopkins University, Baltimore, MD, United States