00480nas a2200193   4500000000100000008004100001100001500042700001800057700001200075700001400087700001200101700001700113700001300130700001400143245010400157300001200261490000700273050000600280       2009                            d1 aBarclay J.1 aHillis Graham1 aFord I.1 aMiller B.1 aDick S.1 aDennekamp M.1 aAyres J.1 aSeaton A.00aA panel study of air pollution in subjects with heart failure: negative results in treated patients  a325-34.0 v66  aY