| Authors: |
Laerum D; Department of Internal Medicine, Pulmonary Section, Sorlandet Hospital Kristiansand, postboks 416 Lundsiden, Kristiansand,4604, Norway. Electronic address: dan.larum@sshf.no., Brustugun OT; Section of Oncology, Vestre Viken Hospital Trust, Postboks 800, Drammen, 3004, Norway., Gallefoss F; Department of Research, Sorlandet Hospital Kristiansand, postboks 416 Lundsiden, 4604 Kristiansand, Norway and Medical Faculty, University of Bergen, Bergen, Norway., Falk R; Oslo Centre for Biostatistics and Epidemiology, Oslo University Hospital, Pb 4950 Nydalen, Oslo,0424, Norway., Strand TE; Cancer Registry of Norway, Ullernchausseen 64, Oslo, 0379, Norway., Fjellbirkeland L; Department of Respiratory Medicine, Oslo University Hospital, University of Oslo, Postboks 4950 Nydalen Oslo,0424, Norway. |
