Capobianchi M R, Sambri V, Castilletti C, Pierro A M, Rossini G, Gaibani P, Cavrini F, Selleri M, Meschi S, Lapa D, Di Caro A, Grossi P, De Cillia C, Venettoni S, Landini M P, Ippolito G, Nanni Costa A
National Institute for Infectious Diseases (INMI) L. Spallanzani , Rome, Italy.
Euro Surveill. 2010 Aug 26;15(34):19648. doi: 10.2807/ese.15.34.19648-en.