van Maarseveen NM et al.
The Journal of Infectious Diseases, 2007
Kristiansen TB et al.
Scandinavian Journal of Infectious Diseases, 2005
Perez EE et al.
The Journal of Infectious Diseases, 2001
Yerly S et al.
Lancet (london, England), 1999
Patick AK et al.
Journal of Virology, 1995