Additional file 2: of Underutilization and disparities in access to EGFR testing among Medicare patients with lung cancer from 2010 – 2013 Julie Lynch Brygida Berse Merry Rabb Paul Mosquin Rob Chew Suzanne West Nicole Coomer Daniel Becker John Kautter 10.6084/m9.figshare.6003353.v1 https://springernature.figshare.com/articles/dataset/Additional_file_2_of_Underutilization_and_disparities_in_access_to_EGFR_testing_among_Medicare_patients_with_lung_cancer_from_2010_2013/6003353 Timeline of selected clinical guidelines and regulatory decisions. (XLSX 12 kb) 2018-03-20 05:00:00 Lung cancer EGFR testing Medicare Hospital referral region Billing code