TY - JOUR AU - Mork, H; Ignee, A; Schuessler, G TI - Analysis of neuroendocrine tumour metastases in the liver using contrast enhanced ultrasonography JO - Scand J Gastroenterol VL - 42 PY - 2007 DO - 10.1080/00365520601021765 SP - 652 EP - 662 N1 - et al. ER -