Affiliation: | aDepartment of Obstetrics and Gynaecology, University of Oulu, Oulu, Finland;bClinical Research Center, Oulu University Hospital, Oulu, Finland;cFamily Federation of Finland, Oulu, Finland;dDepartment of Pathology, University of Oulu, Oulu, Finland;eDepartment of Clinical Chemistry, University of Oulu, Oulu, Finland |