Baldo V, Ferro A, Napoletano G, Milani S, Bertoncello L, Baldovin T, Trivello R
Department of Environmental Medicine and Public Health, Institute of Hygiene, University of Padua, Italy.
Euro Surveill. 2007 Nov 1;12(11):E071101.3. doi: 10.2807/esw.12.44.03299-en.