00747nas a2200265   4500000000100000000000100001008004100002653001500043653001400058653001800072653004000090653001700130653001500147100001500162700002800177700001500205700001500220700001500235700001200250245015200262250001500414300001400429490000700443020003100450       2023                            d10aCPRD Aurum10aCprd gold10abreast cancer10aclinical practice research datalink10adata quality10aValidation1 aK. Hagberg1 aC. Vasilakis-Scaramozza1 aR. Persson1 aD. Neasham1 aG. Kafatos1 aS. Jick00aPresence of Breast Cancer Information Recorded in United Kingdom Primary Care Databases: Comparison of CPRD Aurum and CPRD GOLD (Companion Paper 1)  a2023/12/21  a1183-11920 v15  a1179-1349 (Print)1179-1349