00597nas a2200205   4500000000100000000000100001008004100002653002200043100001700065700001400082700001400096700001400110700001000124700001700134700001700151700001300168245018100181250001500362020001400377       2022                            d10aCOPD epidemiology1 aH. Whittaker1 aC. Nordon1 aA. Rubino1 aT. Morris1 aY. Xu1 aE. de Nigris1 aH. Mullerova1 aJ. Quint00aFrequency and severity of respiratory infections prior to COPD diagnosis and risk of subsequent postdiagnosis COPD exacerbations and mortality: EXACOS-UK health care data study  a2022/11/01  a0040-6376