1. Division of Pulmonary and Critical Care Medicine, Department of Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA.
2. Veterans Affairs Palo Alto Health Care System, Medical Service, Palo Alto, CA 94304, USA.
3. Infectious Diseases Research Laboratory, California Institute for Medical Research, San Jose, CA 95128, USA.
4. Division of Infectious Diseases and Geographic Medicine, Department of Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA.
5. Biomaterials and Advanced Drug Delivery Laboratory, Cardiovascular Pharmacology Division, Cardiovascular Institute, Stanford University School of Medicine, Stanford, CA 94304, USA.
6. Veterans Affairs Palo Alto Health Care System, Pathology and Laboratory Service, Palo Alto, CA 94304, USA.
7. Department of Pathology, Stanford University School of Medicine, Stanford, CA 94305, USA.
8. Department of Medical Microbiology, Istanbul University School of Medicine, Istanbul, Turkey.
9. Division of Molecular Biology, Medical University Innsbruck, Innsbruck, Austria.
10. Department of Pharmacology, University of Maryland School of Medicine, Baltimore, MD 21201, USA.