Survival and prognostic factors at time of diagnosis in high-grade appendicular osteosarcoma: a 21 year single institution evaluation from east Denmark. - Colding-Rasmussen, Thomas; Thorn, Andrea Pohly; Horstmann, Peter; Rechnitzer, Catherine; Hjalgrim, Lisa Lyngsie; Krarup-Hansen, Anders; Petersen, Michael Mørk (Acta Oncologica, 2018)