1. Aminopyrine demethylation measured by breath analysis in cirrhosis;Bircher, J.; Kupfer, A.; Gikalov, I.; Preisig, R.;Clinical Pharmacology and Therapeutics,1976
2. Aminopyrine breath test for evaluation of liver function. How to analyse the 14CO2 data. Radioaktive Isotopen in Klinik und;Bircher, J.; Platzer, R.; Gikalov, I.; Kupfer, A.; Preisig, R.;Forschung,1976
3. Isoenzyme patterns of serum alkaline phosphatase in ethanol-induced liver injury;Brohult, J.; Sundblad, L.;Acta Medica Scandinavica,1973
4. A new look at the measurement and interpretation of enzyme assays;Ceriotti, G.;Annals of Clinical Biochemistry,1976
5. Assessment of aminopyrine metabolism in man by breath analysis after oral administration of 14C-aminopyrine;Hepner, G.W.; Vesell, E.S.;New England Journal of Medicine,1974