Determining the Levels of Four Phenylethanoid Glycosides and Five Triterpene Acids in Liuwei Dihuang Capsule Using Solid Phase Extraction with HPLC-UV
Journal of Analytical Methods in Chemistry [2019]
Yong Zhang, Xian-Liang Zou, Yong-Li Wang, Lu Gao, Gui-Xin Chou