Drug firms use medical staffs for pitches

Pharmaceutical companies are barred by the Food and Drug Administration from promoting unapproved drug uses, but they are using employees called "medical science liaisons," who are often physicians and pharmacists, as a legal way to discuss those uses. Medical science liaisons, who are considered medical rather than sales staff, have greater freedom than salespeople as they visit doctors offices to discuss the science behind a medicine, including unapproved uses.