Impact of symptom burden on health related quality of life of cancer survivors in a Danish cancer rehabilitation program: A longitudinal study. - Kjaer, Trille Kristina; Johansen, Christoffer; Ibfelt, Else; Christensen, Jane; Rottmann, Nina; Høybye, Mette Terp; Ross, Lone; Svendsen, Maria; Dalton, Susanne Oksbjerg (Acta Oncologica, 2011)