Corrigendum: Targeted treatment and survival in advanced non-squamous non-small cell lung cancer patients – a nationwide and longitudinal study - Johanne Elise Nyen; Anja Ødegård Booth; Øyvind Husby; Christoffer Bugge; Ingrid Engebretsen; Francisco Oteiza; Åslaug Helland; Åslaug Helland; Lars Fjellbirkeland; Lars Fjellbirkeland; Odd Terje Brustugun; Odd Terje Brustugun; et al. (Frontiers in Oncology)