7Agustí A:Systemic effects of chronic obstructive pulmonary disease:what we know and what we dont know (but should)[J].Proc Am Thorac Soc,2007,4:522-525.
8Mannino DM,Ford ES,Redd SC:Obstructive and restrictive lung disease and markers of inflammation:Data from the third national health and nutrition examination[J].Am J Med,2003,114:758-762.
9Dahl M,Tybjaerg-Hansen A,Vestbo J,Lange P,Nordestgaard BG:Elevated plasma fibrinogen associated with reduced pulmonary function and increased risk of chronic obstructive pulmonary disease[J].Am J Respir Crit Care Med,2001,164:1008-1011.