aDepartment of Infectious Diseases, Fatebenefratelli Sacco Hospital, Milan, Italy
bSchool of Clinical Medicine, Faculty of Health Science, University of the Witwatersrand, Johannesburg, South Africa
cDivision of Hospital Medicine
dDivision of Infectious Diseases and Geographic Medicine, Stanford University School of Medicine, Stanford, California, USA.
Correspondence to Giuliano Rizzardini, MD, Ospedale L. Sacco, Milan, Italy. E-mail: email@example.com
Received 11 April, 2018
Accepted 12 April, 2018