1. Department of Emergency Medicine University of Pennsylvania Perelman School of Medicine Philadelphia Pennsylvania USA
2. University of Pennsylvania Perelman School of Medicine Philadelphia Pennsylvania USA
3. Department of Medicine University of Pennsylvania Perelman School of Medicine Philadelphia Pennsylvania USA
4. Division of Neurocritical Care Department of Neurology University of Pennsylvania Perelman School of Medicine Philadelphia Pennsylvania USA
5. Department of Neurology University of Pennsylvania Perelman School of Medicine Philadelphia Pennsylvania USA
6. Department of Clinical Studies University of Pennsylvania School of Veterinary Medicine Kennett Square Pennsylvania USA
7. Division of Pulmonary, Allergy, and Critical Care University of Pennsylvania Perelman School of Medicine Philadelphia Pennsylvania USA