Biological treatment of pediatric sarcomas by combined virotherapy and NK cell therapy. - Klose, Chihab; Berchtold, Susanne; Schmidt, Marina; Beil, Julia; Smirnow, Irina; Venturelli, Sascha; Burkard, Markus; Handgretinger, Rupert; Lauer, Ulrich M. (BMC Cancer, 2019)