Neuroblastoma and Ewing's Sarcoma Associated with ROR1 Expression Can Be Effectively Targeted with NK Cells Modified to Express an Anti ROR1 Chimeric Antigen Receptor - Elmacken, Mona; Awasthi, Aradhana; Ayello, Janet; van de Ven, Carmella; Luo, Wen; Liao, Yanling; Riddell, Stanley; Cairo, Mitchell S. (Biology of blood and marrow transplantation, 2015)