Drug expert: Impossible to tell why patients died

Published June 8, 2010 at 5:02 a.m.

An internationally recognized researcher on drug toxicology told jurors that it's impossible to say why patients of a former Haysville doctor died.

Steven Karch testified Monday that the deaths of patients of the Schneider Medical Clinic might have resulted from serious maladies they suffered from, not just overdoses of drugs prescribed to them.

Karch, a medical doctor from Berkeley, Calif., is the author of the "Drug Abuse Handbook" and "Postmortem Toxicology of Abused Drugs."

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