00539nas a2200205   4500000000100000000000100001008004100002100001300043700001700056700002200073700001400095700001300109700001300122700001300135700001400148245012100162300001200283490000600295022003200301       2014                            d1 aJ. Quint1 aH. Mullerova1 aR. DiSantostefano1 aH. Forbes1 aS. Eaton1 aJ. Hurst1 aK. Davis1 aL. Smeeth00aValidation of chronic obstructive pulmonary disease recording in the Clinical Practice Research Datalink (CPRD-GOLD)  ae0055400 v4  a2044-6055 (Print) 2044-6055