Journal article (2005) - P Roepman (author) , L.F.A. Wessels (author) , Marcel J. T. Reinders (author) , PJ Slootweg (author) , FCP Holstege (author) , N Kettelarij (author) , P Kemmeren (author) , AJ Miles (author) , P Lijnzaad (author) , MGJ Tilanus (author) , R Koole (author) , GJ Hordijk (author) , P van der Vliet (author)