Simultaneous determination of seven bufadienolides in rat plasma after oral administration of Shexiang Baoxin Pill by liquid chromatography-electrospray ionization-tandem mass spectrometry: application to a pharmacokinetic study Wang, S.; Peng, C.; Jiang, P.; Fu, P.; Tao, J.; Han, L.; Huang, H.; Chang, W.; Li, L.; Zhang, W.; Liu, R. Journal of Chromatography. B Analytical Technologies in the Biomedical and Life Sciences 967: 255-263 2014 1873-376X 10.1016/j.jchromb.2014.07.038 https://eurekamag.com/research/055/788/055788566.php