Edit Ragnhild Reinertsen Kjekshus Affiliation Department of Clinical Science E-mail ragnhild.kjekshus@student.uib.no Visitor address Haukeland universitetssykehus, Laboratoriebygget5009 Bergen Postal address P.O. Box 7804 NO-5020 Bergen Norway Ragnhild Reinertsen Kjekshus Affiliation Department of Clinical Science