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Tesfaigzi, Yohannes, Orrin B. Myers, Christine A. Stidley, Kurt Schwalm, Maria Picchi, Richard E. Crowell, Frank D. Gilliland, a Steven A. Belinsky. Genotypes in Matrix Metalloproteinase 9 Are a Risk Factor for COPD. Dove Medical Press, 2006.

Tesfaigzi, Yohannes, et al. Genotypes in Matrix Metalloproteinase 9 Are a Risk Factor for COPD. Dove Medical Press, 2006.