Corrigendum to "Clinical Presentation, Natural History, and Therapeutic Approach in Patients with Solitary Fibrous Tumor: A Retrospective Analysis". (8th February 2021) - Schöffski, P.; Timmermans, I.; Hompes, D.; Stas, M.; Boecxstaens, Veerle; Sinnaeve, F.; De Leyn, P.; Coosemans, W.; Van Raemdonck, D.; Hauben, E.; Sciot, R.; Clement, P.; et al.