4Sanjay Sethi,M.D,Timothy F.Murphy,M.D.Infection in the Pathogenesis and Course of Chronic Obstructive Pulmonary Disease.[J].The new England Journal of Medicine,2008,359(22):2355-2365.
5Hughes DA,Norton R.Vitamin D and respiratory health[J].Clin Exp Immunol,2009,158(1):20-25.
6Gadgil A,Duncan SR.Role of T-lymphocytes and pro-inflammatory mediators in the pathogenesis of chronic obstructive pulmonary disease[J].Int J Chron Obstruct Pulmon Dis,2008,3(4):531-541.
7Ginde AA,Mansbach JM,Camargo CA Jr.Association between serum 25-hydroxyvitamin D level and upper respiratory tract infection in the Third National Health and Nutrition Examination Survey[J].Arch Intern Med,2009 Feb 23,169(4):384-390.
8Sankarand RT,Mattana J,Pollack S,et al.Laboratory abnormalities in patients with bacterial pneumonia[J].Chest,1997,111 (3):595-600.