Boldo Elena, Medina Sylvia, Oberg Mattias, Puklová Vladimíra, Mekel Odile, Patja Kristiina, Dalbokova Dafina, Krzyzanowski Michal, Posada Manuel
National Epidemiology Centre, Carlos III Health Institute, Madrid, Spain.
Public Health Rep. 2010 May-Jun;125(3):478-87. doi: 10.1177/003335491012500317.