1. Cardiac Catheterization Laboratory, Cardiology Clinic B, the Heart Centre; University of Copenhagen; Rigshospitalet; Copenhagen; Denmark
2. Department of Gynecology and Obstetrics; Aarhus University Hospital; Skejby; Denmark
3. Department of Clinical Oral Physiology, School of Dentistry; Aarhus University; Aarhus; Denmark
4. Department of Nursing Science, Institute of Public Health; Aarhus University; Skejby; Denmark