Utility of a buccal swab point-of-care test for the IFNL4 genotype in the era of direct acting antivirals for hepatitis C virus. oleh Aminata Sy, Leanne McCabe, Emma Hudson, Azim M Ansari, Vincent Pedergnana, Shang-Kuan Lin, S Santana, Marzia Fiorino, Aftab Ala, Ben Stone, M Smith, Mark Nelson, Stephen T Barclay, Stuart McPherson, Stephen D Ryder, Jane Collier, Eleanor Barnes, Ann Sarah Walker, Sarah L Pett, Graham Cooke, STOP-HCV-1 trial team