Kaarsholm, Niels Christian; Madsen, Peter; Schlein, Morten; Olsen, Helle Birk; Havelund, Svend; Steensgaard, Dorte Bjerre; Ludvigsen, Svend; Jakobsen, Palle; Petersen, Anders Klarskov; Schluckebier, Gerd Patent: US2005/65066 A1, 2005 ; Location in patent: Page/Page column 86 ;