Department of Clinical Immunology, Aalborg University Hospital, Aalborg, Denmark; Department of Clinical Medicine, Aalborg University, Aalborg, Denmark; Extracellular Vesicles Research Center Denmark (EVSearch.dk), Aalborg, Denmark. Electronic address: maljoe@rn.dk. Department of Clinical Immunology, Aalborg University Hospital, Aalborg, Denmark; Extracellular Vesicles Research Center Denmark (EVSearch.dk), Aalborg, Denmark. Department of Obstetrics and Gynecology, Aalborg University Hospital, Aalborg, Denmark. Department of Obstetrics and Gynecology, Aalborg University Hospital, Aalborg, Denmark; School of Medicine and Health, Aalborg University, Aalborg, Denmark.