Systematic screening and characterization of Qi-Li-Qiang-Xin capsule-related xenobiotics in rats by ultra-performance liquid chromatography coupled with quadrupole time-of-flight tandem mass spectrometry. - Yun, Wei-jing; Yao, Zhi-hong; Fan, Cai-lian; Qin, Zi-fei; Tang, Xi-yang; Gao, Meng-xue; Dai, Yi; Yao, Xin-sheng (Journal of Chromatography B: Analytical Technologies in the Biomedical & Life Sciences, 2018)