Comparison of bioactive components and pharmacological activities of Ophiopogon japonica extracts from different geographical origins - Zhao, M; Xu, W F; Shen, H Y; Shen, P Q; Zhang, J; Wang, D D; Xu, H; Wang, H; Yan, T T; Wang, L; Hao, H P; Wang, G J; Cao, L J (J Pharmaceut Biomed, 2017)