1 Department of Medicine, Baylor College of Medicine, Houston, Tex.
2 Infectious Diseases Section, Department of Medicine, Baylor College of Medicine, Houston, Tex; Medical Care Line, Michael E. DeBakey Veterans Affairs Medical Center, Houston, Tex.
3 Infectious Diseases Section, Department of Medicine, Baylor College of Medicine, Houston, Tex; Medical Care Line, Michael E. DeBakey Veterans Affairs Medical Center, Houston, Tex. Electronic address: pakulkar@bcm.edu.