1. Assistant Professor, Department of Anesthesiology and Critical Care Medicine and Department of Environmental Health Sciences/Division of Physiology, Johns Hopkins Medical Institutions. Associate Professor, Clinic of Anesthesiology and Critical Care Medicine, University Duisburg-Essen.
2. Professor, Department of Medicine/Division of Pulmonary Medicine and Environmental Health Sciences/Division of Physiology, Johns Hopkins Medical Institutions.
3. Professor, Department of Anesthesiology and Critical Care Medicine, Department of Medicine/Division of Pulmonary Medicine and Environmental Health Sciences/Division of Physiology, Johns Hopkins Medical Institutions.