Temporospatial heterogeneity of acquired resistance mechanisms in EGFR-mutant lung adenocarcinoma: A case of concurrent EGFRT790M mutation and small cell transformation oleh Daniel Johnathan Hughes, Gary JR Cook, Emma McLean, Daniel Smith, Juliet King, Athanasios Diamantopoulos, Aled Jones, Michael Neat, George Santis, James Spicer, Eleni Karapanagiotou, Alexandros Georgiou