1. Department of Orthopaedic Surgery, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200 Aarhus N, Denmark
2. Department of Orthopaedic Surgery, Rigshospitalet, Blegdamsvej 9, 2100 Copenhagen, Denmark
3. Department of Experimental Clinical Oncology, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200 Aarhus N, Denmark
4. Department of Pathology, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200 Aarhus N, Denmark
5. Department of Oncology, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200 Aarhus N, Denmark
6. The Research Unit of General Practice, Aarhus University, Bartholins Allé 2, 8000 Aarhus C, Denmark
7. Silkeborg Hospital, Department of Clinical Medicine, Aarhus University, Falkevej 1G, 8600 Silkeborg, Denmark