Contemporary survival endpoints: an International Diffuse Intrinsic Pontine Glioma Registry study - Cooney, Tabitha; Lane, Adam; Bartels, Ute; Bouffet, Eric; Goldman, Stewart; Leary, Sarah E S; Foreman, Nicholas K; Packer, Roger J; Broniscer, Alberto; Minturn, Jane E; Shih, Chie-Schin; Chintagumpala, Murali; et al. (Neuro-oncology (Charlottesville, Va.), 2017)