J Klein

Reference values for the trace elements copper, manganese, selenium, and zinc in the serum/plasma of children, adolescents, and adults.

M Rükgauer, J D Kruse-Jarres, J Klein, 1997, Journal of trace elements in medicine and biology : organ of the Society for Minerals and Trace Elements.

Critical Comparison of Novel and Existing Methods of Compliance Assessment During a Clinical Trial of an Oral Iron Chelator

G Koren, G. Koren, N. Olivieri, 1994, Journal of clinical pharmacology.

Validation of self-reported smoking by analysis of hair for nicotine and cotinine.

G Koren, G. Koren, J Klein, 1996, Therapeutic drug monitoring.