Journal article (2007) - DE Kreft (author) , C Berstone (author) , B van der Meer (author) , CR Geel (author) , R Meyer (author) , F May (author) , R.J. Arts (author) , A Obdam (author) , R Svensson (author) , S Eriksson (author) , P Durst (author) , I Gaus (author)