00495nas a2200169   4500000000100000000000100001008004100002100001500043700001100058700001400069700001400083700001300097245016500110300001100275490000700286022003200293       2008                            d1 aJ. Griffin1 aS. Lee1 aM. Caiado1 aS. Kesten1 aD. Price00aComparison of tiotropium bromide and combined ipratropium/salbutamol for the treatment of COPD: a UK General Practice Research Database 12-month follow-up study  a104-100 v17  a1471-4418 (Print) 1471-4418