1 Division of Infectious Diseases, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia.
2 Center for Real-World Effectiveness and Safety of Therapeutics, Center for Clinical Epidemiology and Biostatistics, Perelman School of Medicine, University of Pennsylvania, Philadelphia.
3 VA Connecticut Healthcare System, US Department of Veterans Affairs, West Haven.
4 Department of Medicine, Yale School of Medicine, New Haven, Connecticut.
5 Division of Health Policy and Management, Yale School of Public Health, New Haven, Connecticut.