1. Division of Infectious Diseases, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland.
2. Armstrong Institute of Patient Safety and Quality, Johns Hopkins University School of Medicine, Baltimore, Maryland.
3. Living Environments Laboratory, Department of Industrial and Systems Engineering, Center for Quality and Productivity Improvement, College of Engineering, Wisconsin Institutes for Discovery, University of Wisconsin—Madison, Madison, Wisconsin.
4. Geriatrics Research Education and Clinical Center, William S. Middleton Memorial Veterans Hospital, Madison, Wisconsin.
5. Johns Hopkins Home Care Group, Baltimore, Maryland.
6. Division of Geriatric Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland.
7. Department of Health Policy and Management, Johns Hopkins University Bloomberg School of Public Health, Baltimore, Maryland.
8. Department of Community and Public Health, Johns Hopkins School of Nursing, Baltimore, Maryland.
9. Department of Clinical Investigation, Johns Hopkins University Bloomberg School of Public Health, Baltimore, Maryland.