EVALUATION OF LIQUID-CHROMATOGRAPHY COUPLED WITH HIGH-FIELD H-1-NMR SPECTROSCOPY FOR DRUG METABOLITE DETECTION AND CHARACTERIZATION - THE IDENTIFICATION OF PARACETAMOL METABOLITES IN URINE AND BILE - SPRAUL,M; HOFMANN,M; LINDON,JC; FARRANT,RD; SEDDON,MJ; NICHOLSON,JK; WILSON,ID (NMR IN BIOMEDICINE, 1994)