Engberg Jørgen, Andersen Sigrid, Skov Robert, Aarestrup Frank Møller, Gerner-Smidt Peter
Department of Gastrointestinal Infections, Division of Microbiology, Statens Serum Institut, Artillerivej 5, 2300 Copenhagen S, Copenhagen.
Clin Microbiol Infect. 1999 Sep;5(9):580-584. doi: 10.1111/j.1469-0691.1999.tb00440.x.