Quick comparison of Radix Paeonia Alba, Radix Paeonia Rubra, and Cortex Moutan by high performance liquid chromatography coupled with monolithic columns and their chemical pattern recognition Chunnian H, Yong P, Yuxiong F, Bing P, Zhe W, Peigen X. Quick comparison of Radix Paeonia Alba, Radix Paeonia Rubra, and Cortex Moutan by high performance liquid chromatography coupled with monolithic columns and their chemical pattern recognition. Pharmacognosy Magazine [Internet]. 2012;8(31):237-243. https://www.ncbi.nlm.nih.gov/pubmed/23060699