Blood-Based Biomarkers Are Associated with Disease Recurrence and Survival in Gastrointestinal Stroma Tumor Patients after Surgical Resection. oleh Michael Stotz, Bernadette Liegl-Atzwanger, Florian Posch, Edvin Mrsic, Michael Thalhammer, Tatjana Stojakovic, Angelika Bezan, Martin Pichler, Armin Gerger, Joanna Szkandera