1. Section of Infectious Diseases, Department of Medicine, Baylor College of Medicine, Houston, TX, USA
2. Section of Health Services Research, Department of Medicine, Baylor College of Medicine, Houston, TX, USA
3. Center for Innovations in Quality, Effectiveness and Safety, Michael E. DeBakey VA Medical Center, Houston, TX, USA
4. School of Social Sciences, Rice University, Houston, TX, USA
5. Department of Communications, Texas A&M University, College Station, TX, USA