Edit Salminen Pirjo-Riitta Affiliation Department of Clinical Science E-mail salminen.pirjo-riitta@uib.no Visitor address Haukeland universitetssykehus, Laboratoriebygget5009 Bergen Postal address P.O. Box 7804 NO-5020 Bergen Norway Salminen Pirjo-Riitta Affiliation Department of Clinical Science