Taiwan's government says it's making big gains against criminal operators of underground radio stations. <br /><br />Over the past three months, the office of the prime minister has been personally overseeing a crackdown. <br /><br />This is attributed to the sale of often fake and harmful drugs from advertisers.<br /><br />So widespread is the problem and so good the marketing, says the government, that it's made it a top public health priority.<br /><br />Al Jazeera's Steve Chao reports.
