1. Department of Head and Neck Surgery, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
2. Department of Breast Surgery, Herlev and Gentofte Hospital, Copenhagen University Hospital, Herlev, Denmark
3. Department of Breast Surgery, 2100 Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
4. Department of Pathology, Medical Academy, Hospital of Lithuanian University of Health Sciences, Kaunas, Lithuania
5. Department of Surgery, Medical Academy, Hospital of Lithuanian University of Health Sciences, Kaunas, Lithuania