*Department of Clinical Microbiology and Infectious Diseases, St Vincent's Hospital, Sydney, Australia; and

†Unit of Clinical Pharmacology, ASST Fatebenefratelli Sacco University Hospital, Milan, Italy.

Correspondence: Deborah J. E Marriott, MD, Department of Clinical Microbiology and Infectious Diseases, St Vincent's Hospital, Sydney, NSW 2068, Australia (e-mail: [email protected]).

Conflicts of Interest and Source of Funding: None declared