1. Department of Anesthesiology and Critical Care MedicineThe Johns Hopkins Medical Institutions Baltimore Maryland USA
2. Department of Pathology and SurgeryThe Johns Hopkins Medical Institutions Baltimore Maryland USA
3. Department of Cardiac SurgeryThe Johns Hopkins Medical Institutions Baltimore Maryland USA
4. Department of CardiologyThe Johns Hopkins Medical Institutions Baltimore Maryland USA
5. Department of Anesthesiology and Critical Care Medicine, Faculty, Johns Hopkins Health System Blood Management Program, Armstrong Institute for Patient Safety and QualityThe Johns Hopkins Medical Institutions Baltimore Maryland USA