TY - JOUR AU - Topalian, S L TI - Safety, activity, and immune correlates of anti-PD-1 antibody in cancer JO - N Engl J Med VL - 366 PY - 2012 DO - 10.1056/NEJMoa1200690 L3 - PubMed-ID: 22658127 SP - 2443 EP - 2454 N1 - et al. ER -