1. Employee Health and Wellness Service, Memorial Sloan Kettering Cancer Center, New York, New York, USA
2. Infection Control, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York, USA
3. Clinical Chemistry Service, Department of Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, New York, USA
4. Division of Quality and Safety, Memorial Sloan Kettering Cancer Center, New York, New York, USA
5. Infection Control and Infectious Disease Service, Department of Medicine, Memorial Sloan Kettering Cancer Center and Department of Medicine, Weill Cornell Medical College, New York, New York, USA