00459nas a2200145   4500000000100000008004100001100001500042700001600057700001400073700001400087700001600101700001300117245016900130022001400299       2020                            d1 aM. Quiroga1 aE. Shephard1 aL. Mounce1 aM. Carney1 aW. Hamilton1 aS. Price00aQuantifying the impact of pre-existing conditions on the stage of oesophagogastric cancer at diagnosis: a primary care cohort study using electronic medical records  a0263-2136