García San Miguel L, Quereda C, Martínez M, Martín-Dávila P, Cobo J, Guerrero A
Department of Infectious Diseases and Microbiology, Hospital Ramón y Cajal, Madrid, Spain.
Eur J Clin Microbiol Infect Dis. 1998 Sep;17(9):675-6. doi: 10.1007/BF01708357.