00446nas a2200169   4500000000100000000000100001008004100002100001500043700001700058700001400075700001600089700001300105245012700118300001100245490000600256022001400262       2011                            d1 aP. Walters1 aP. Schofield1 aL. Howard1 aM. Ashworth1 aA. Tylee00aThe relationship between asthma and depression in primary care patients: a historical cohort and nested case control study  ae207500 v6  a1932-6203