McDonald ML, Cho MH, S?rheim IC, Lutz SM, Castaldi PJ, Lomas DA, Coxson HO, Edwards LD, MacNee W, Vestbo J, Yates JC, Agusti A, Calverley PM, Celli B, Crim C, Rennard SI, Wouters EF, Bakke P, Tal-Singer R, Miller BE, Gulsvik A, Casaburi R, Wells JM, Regan EA, Make BJ, Hokanson JE, Lange C, Crapo JD, Beaty TH, Silverman EK, Hersh CP. Common genetic variants associated with resting oxygenation in chronic obstructive pulmonary disease. Am J Respir Cell Mol Biol. 2014 Nov; 51(5):678-87.