Simultaneously targeted and untargeted multicomponent characterization of Erzhi Pill by offline two-dimensional liquid chromatography/quadrupole-Orbitrap mass spectrometry. - Fu, Ling-ling; Ding, Hui; Han, Li-feng; Jia, Li; Yang, Wen-zhi; Zhang, Chun-xia; Hu, Ying; Zuo, Tian-tian; Gao, Xiu-mei; Guo, De-an (Journal of Chromatography A, 2019)