1. Department of Pediatric Surgery, Rigshospitalet, Copenhagen, Denmark
2. Department of Pathology, Rigshospitalet, Copenhagen, Denmark
3. Faculty of Health and Medical Science, University of Copenhagen, Copenhagen, Denmark
4. Section of Endocrinology, Department of Pediatrics, Hvidovre Hospital, Copenhagen, Denmark
5. Department of Pathology, Roskilde Hospital, Roskilde, Denmark