Survival, durable tumor remission, and long-term safety in patients with advanced melanoma receiving nivolumab. - Topalian SL; Sznol M; McDermott DF; Kluger HM; Carvajal RD; Sharfman WH; Brahmer JR; Lawrence DP; Atkins MB; Powderly JD; Leming PD; Lipson EJ; et al. (Journal of clinical oncology : official journal of the American Society of Clinical Oncology, 2014)