1. Department of Radiology, Institute of Clinical Sciences, Sahlgrenska University Hospital, Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden;
2. Department of Obstetrics and Gynecology, Institute of Clinical Sciences, Sahlgrenska University Hospital, Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden;
3. Department of Radiology, St Marianna University School of Medicine, Kanagawa, Japan;
4. Institute of Neuroscience and Physiology, Department of Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden