[1] Rigshosp, Finsen Ctr, Dept Oncol, Copenhagen, Denmark
[2] Danish Canc Soc, Documentat & Qual, Copenhagen, Denmark
[3] NCI, Outcomes Res Branch, Div Canc Control & Populat Sci, Rockville, MD USA
[4] Danish Canc Soc Res Ctr, Unit Survivorship, Copenhagen, Denmark