00359nas a2200109   4500000000100000008004100001100001900042700001300061700001600074245014500090022001400235       2020                            d1 aS. Chowienczyk1 aS. Price1 aW. Hamilton00aChanges in the presenting symptoms of lung cancer from 2000-2017: a serial cross-sectional study of observational records in UK primary care  a0960-1643