Hand hygiene a handbook for medical professionals / edited by Didier Pittet, Infection Control Program and WHO Collaborating Centre on Patient Safety, University of Geneva Hospitals and Faculty of Medicine, Geneva, Switzerland, John M. Boyce, Hospital Epidemiology and Infection Control, Yale-New Haven Hospital, and Yale University School of Medicine, New Haven, CT, USA, Benedetta Allegranzi, Infection Prevention and Control Global Unit, Department of Service Delivery and Safety, World Health Organization, and Faculty of Medicine, University of Geneva, Geneva, Switzerland ; series editors, Scott A. Flanders, MD, MHM, Sanja Saint, MD, MPH, FRCP.