What questionnaires to use when measuring quality of life in sacral tumor patients: the updated sacral tumor survey

Olivier D.R. van Wulfften Palthe, Stein J. Janssen, Jay S. Wunder, Peter C. Ferguson, Guo Wei, Peter S. Rose, Micheal J. Yaszemski, Franklin H. Sim, Patrick J. Boland, John H. Healey, Francis J. Hornicek, Joseph H. Schwab