Sonographic assessment of features suspicious of uterine sarcoma. Evaluation of their use in preoperatvive prediction of malignancy - Tozzi, A; AM, Knipprath-Mészáros; Butenschön, A; Heinzelmann-Schwarz, V; Manegold-Brauer, G (Geburtshilfe und Frauenheilkunde, 2020)