Prosecutors Say Greed Drove Pharmacist to Dilute Drugs
Robert R Courtney, Kansas City, Mo, pharmacist and wealthy businessman, reportedly admits diluting chemotherapy drugs from Nov 2000 to May 2001 out of greed; prosecutors say hundreds of cancer patients whose doctors administered drugs from premixed bags may have gotten treatment drastically weaker than intended; Courtney allegedly diluted Taxol and Gemzar, used to treat variety of cancers, and other drugs; photo (M)