van der Palen J, Monninkhof E, van der Valk P, Sullivan SD, Veenstra DL. Cost effectiveness of inhaled steroid withdrawal in outpatients with chronic obstructive pulmonary disease. Thorax. 2006 Jan;61(1):29-33. Epub 2005 Oct 21.
van der Palen J, Monninkhof E, van der Valk P, Sullivan SD, Veenstra DL. Cost effectiveness of inhaled steroid withdrawal in outpatients with chronic obstructive pulmonary disease. Thorax. 2006 Jan;61(1):29-33. Epub 2005 Oct 21.