引用本文: | Thomsen M,Nordestgaard BG,Sethi AA,Tybj?rg-Hansen A,Dahl M.β2-adrenergic receptor polymorphisms, asthma and COPD: two large population-based studies[J].The European respiratory journal : official journal of the European Society for Clinical Respiratory Physiology,2012,39(3):558-566. |