Karl A Franklin , Christer Janson , Thórarinn Gíslason , Amund Gulsvik , Maria Gunnbjörnsdottir , Birger N Laerum , Eva Lindberg , Eva Norrman , Lennarth Nyström , Ernst Omenaas , Kjell Torén and Cecilie Svanes
Respiratory Research 2008, 9:63doi:10.1186/1465-9921-9-63