First-Line Nivolumab Plus Ipilimumab in Advanced NSCLC: 4-Year Outcomes From the Randomized, Open-Label, Phase 3 CheckMate 227 Part 1 Trial. - Paz-Ares LG; Ramalingam SS; Ciuleanu TE; Lee JS; Urban L; Caro RB; Park K; Sakai H; Ohe Y; Nishio M; Audigier-Valette C; Burgers JA; et al. (Journal of thoracic oncology : official publication of the International Association for the Study of Lung Cancer, 2022)