High-performance liquid chromatography electrospray ionization tandem mass spectrometry for the detection and quantification of pyrrolizidine alkaloid-derived DNA adducts in vitroand in vivo - Fu, PP; Chou, MW; Churchwell, M; Wang, Y; Zao, Y; Xia, Q; da Costa, GG; Marques, MM; Beland, FA; Doerge, DR (Chem Res Toxicol, 2010)