Chinese ex-doctor: Companies offered me cash or gifts
24 July 2013 Last updated at 14:51 BST
Allegations that British drugs giant GlaxoSmithKline (GSK) has paid millions of dollars in bribes to increase its market share in China have thrown the spotlight on the country's murky pharmaceutical industry.
The Chinese authorities say they are investigating up to 60 pharmaceutical firms in an effort to curb drugs prices.
Former Shaghai hospital doctor Chen Xiaolan told the BBC's John Sudworth that she was not offered bribes by international companies - but local firms routinely offered "commissions" of cash or gifts.
"No matter how low your income is, it's not an excuse to take bribes... but taking commissions is what every doctor is doing."