00484nas a2200145   4500000000100000008004100001100001500042700001400057700001400071700001400085700001400099700001300113245019800126022001400324       2021                            d1 aC. Cabrera1 aC. Quelen1 aM. Ouwens1 aK. Hedman1 aU. Rigney1 aJ. Quint00aEvaluating a Cox marginal structural model to assess the comparative effectiveness of inhaled corticosteroids versus no inhaled corticosteroid treatment in chronic obstructive pulmonary disease  a1047-2797