Ethelberg S, Smith B, Torpdahl M, Lisby M, Boel J, Jensen T, Mølbak K
Department of of Bacteriology, Mycology and Parasitology, Statens Serum Institut, Danish National Institute of Health, SSI, Copenhagen, Denmark.
Euro Surveill. 2007 May 31;12(5):E070531.4. doi: 10.2807/esw.12.22.03208-en.