Department of Geography and Environmental Engineering, GWC Whiting School of Engineering, The Johns Hopkins University, Baltimore, MD, USA. Hongtai@jhu.edu.|Division of Rheumatology, Department of Medicine, Johns Hopkins School of Medicine, Baltimore, MD, USA. afava1@jhmi.edu.|Division of Rheumatology, Department of Medicine, Johns Hopkins School of Medicine, Baltimore, MD, USA. tguhr@jhmi.edu.|Division of Rheumatology, Department of Medicine, Johns Hopkins School of Medicine, Baltimore, MD, USA. rcimbro1@jhmi.edu.|Division of Rheumatology, Department of Medicine, Johns Hopkins School of Medicine, Baltimore, MD, USA. arosen@jhmi.edu.|Division of Rheumatology, Department of Medicine, Johns Hopkins School of Medicine, Baltimore, MD, USA. francesco.boin@ucsf.edu.|Department of Geography and Environmental Engineering, GWC Whiting School of Engineering, The Johns Hopkins University, Baltimore, MD, USA. hugh.ellis@jhu.edu.