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Effects of comprehensive therapy based on traditional Chinese medicine patterns in stable chronic obstructive pulmonary disease: a four-center, open-label, randomized, controlled study

Su-yun Li, Jian-sheng Li*, Ming-hang Wang, Yang Xie, Xue-qing Yu, Zi-kai Sun, Li-jun Ma, Wei Zhang, Hai-long Zhang, Fan Cao and Ying-chao Pan

BMC Complementary and Alternative Medicine 2012, 12:197  doi:10.1186/1472-6882-12-197