Pre-treatment Evaluation of Basal Cell Carcinoma for Photodynamic Therapy: Comparative Measurement of Tumour Thickness in Punch Biopsy and Excision Specimens. - Christensen, Eidi; Mjønes, Patricia; Foss, Olav Andreas; Rørdam, Ole Martin; Skogvoll, Eirik (Acta Dermato-Venereologica, 2011)