TY - JOUR AU - Chan, KC A TI - Analysis of plasma epstein-barr virus dna to screen for nasopharyngeal cancer JO - N Engl J Med VL - 377 PY - 2017 DO - 10.1056/NEJMoa1701717 L3 - PubMed-ID: 28792880 SP - 513 EP - 522 N1 - et al. ER -