A multidisciplinary approach to giant cell tumors of tendon sheath and synovium--a critical appraisal of literature and treatment proposal. by van der Heijden, L, Gibbons, C, Hassan, A, Kroep, JR, Gelderblom, H, van Rijswijk, C, Nout, R, Bradley, K, Athanasou, N, Dijkstra, P, Hogendoorn, P, van de Sande, MA