1. Department of Internal Medicine, University of Pittsburgh Medical Center Mercy Hospital, Pittsburgh, USA, PA
2. Department of Critical Care Medicine, University of Pittsburgh Medical Center Mercy Hospital, Pittsburgh, USA, PA
3. Division of Clinical Microbiology, Department of Pathology, University of Pittsburgh Medical Center Mercy Hospital, Pittsburgh, USA, PA
4. Division of Infectious Diseases, University of Pittsburgh Medical Center Mercy Hospital, Pittsburgh, USA, PA