1. *Department of Microbiology and Infectious Diseases, Toho University School of Medicine, Tokyo, Japan;
2. †Division of Infection Prevention and Control, Faculty of Pharmaceutical Sciences, Shonan University of Medical Sciences, Kanagawa, Japan;
3. ‡Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, University of Florida, Gainesville, FL; and
4. §Department of Pathology, University of Michigan, Ann Arbor, MI