Ahmed Qanta A, Memish Ziad A, Allegranzi Benedetta, Pittet Didier
Division of Pulmonary and Critical Care Medicine, Allergy and Clinical Immunology, Medical University of South Carolina, Charleston, SC, USA.
Lancet. 2006 Mar 25;367(9515):1025-7. doi: 10.1016/S0140-6736(06)68431-6.