New directions in cellular therapy of cancer: A summary of the summit on cellular therapy for cancer

David F. Stroncek, Carolina Berger, Martin A. Cheever, Richard W. Childs, Mark E. Dudley, Peter Flynn, Luca Gattinoni, James R. Heath, Michael Kalos, Francesco M. Marincola, Jeffrey S. Miller, Gustavo Mostoslavsky, Daniel J. Powell, Mahendra Rao, Nicholas P. Restifo, Steven A. Rosenberg, John O'Shea, Cornelis J.M. Melief