1 Infectious Disease Section, Michael E. DeBakey VA Medical Center, Texas.
2 Section of Infectious Diseases, Department of Medicine, Baylor College of Medicine, Texas.
3 Section of Health Services Research, Department of Medicine, Baylor College of Medicine, Texas.
4 Houston Veterans Affairs (VA) Health Services R&D Center for Innovations in Quality, Effectiveness and Safety, Michael E. DeBakey VA Medical Center, Texas.