"WASHINGTON (AP) -- Retail sales of five leading painkillers nearly doubled from 1997 to 2005, reflecting a surge in use by patients nationwide who are living in a world of pain, according to a new Associated Press analysis of federal drug prescription data.The analysis reveals that oxycodone usage is migrating out of Appalachia to areas such as Columbus, Ohio, and Fort Lauderdale, Fla., and signif" . . . .