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The chemical constituents in the decoction of Urtica fissa rhizomes 
Mengyue Wang, Xiaoru Feng, Chengqin Zhang, Jun Cheng, Enjia Liu, Li'ang Sun, Xiaobo Li
Journal of Chinese Pharmaceutical Sciences . 2016, (10): 764 -770 .  DOI: 10.5246/jcps.2016.10.085