1. Infectious Disease Service, Brooke Army Medical Center, Joint Base San Antonio-Fort Sam Houston, Texas, USA
2. Department of Medicine, Uniformed Services University of the Health Sciences, Bethesda, Maryland, USA
3. Department of Medicine, Brooke Army Medical Center, Joint Base San Antonio-Fort Sam Houston, Texas, USA
4. Department of Medical Management, Brooke Army Medical Center, Joint Base San Antonio-Fort Sam Houston, Texas, USA
5. Department of Pathology and Laboratory Services, Brooke Army Medical Center, Joint Base San Antonio-Fort Sam Houston, Texas, USA