Willingness of patients with sarcoma to participate in cancer surveillance research: a cross-sectional patient survey oleh Kevin Jones, David Wilson, Michelle Ghert, James Hayden, Benjamin Miller, Patricia Schneider, Robert Turcotte, Roberto Velez, Victoria Giglio, Dana Ghanem, Marc Isler, Sophie Mottard, Yee-Cheen Doung, Kenneth Gundle, R Lor Randall