TY - JOUR AU - Loizides, A; Widmann, G; Freuis, T TI - Optimizing Ultrasound-Guided Biopsy of Musculoskeletal Masses by Application of an Ultrasound Contrast Agent JO - Ultraschall in Med VL - 32 PY - 2011 DO - 10.1055/s-0029-1245713 L3 - PubMed-ID: 20938892 SP - 307 EP - 310 N1 - et al. ER -