It took only an instant for 58-year-old Gailanne Reeh to go from the picture of health to death's door. By chance, her doctor noticed a lump under her arm during a routine exam. It turned out to be advanced breast cancer... --snip-- What does it mean to say an expensive drug works? Is slowing the growth of tumors enough if life is not significantly prolonged or improved? How much evidence must there be before billions of dollars are spent on a drug? Who decides? When, if ever, should cost come into the equation? --snip-- Mr. Lemieux, who was a sales...