Bibliografisk träff 2005-01-01 Rapid and sensitive quantification of urinary N7-methylguanine by isotope-dilution liquid chromatography/electrospray ionization tandem mass spectrometry with on-line solid-phase extraction. Chao MR, Wang CJ, Yang HH, Chang LW, Hu CW. Rapid Commun Mass Spectrom · research support, non-u.s. gov't; journal article · DOI 10.1002/rcm.2082