Recent quotes:

60 doctors took speaker fees from drug giant - The Boston Globe

The use of physicians in speakers programs or “bureaus’’ like Lilly’s, in which doctors generally use company-prepared materials to explain a drug’s uses and dosing to their colleagues, is widespread in the drug industry. But the practice is under growing scrutiny and some academic medical centers are barring their doctors from participating, believing that physicians essentially become hired advertising guns, with weakened credibility.