1. Department of Health Science and Technology, Public Health and Epidemiology Group, Aalborg University, Aalborg Øst, Denmark
2. Ariadne Labs at Brigham and Women’s Hospital and the Harvard T. H. Chan School of Public Health, Boston, Massachusetts
3. Department of Clinical Epidemiology, Aalborg University Hospital, Aalborg, Denmark
4. Department of Obstetrics and Gynecology, Aalborg University Hospital, Aalborg, Denmark