Even Doctors can be bought...

Apparently an ex-army Doctor has been accused of accepting an $800,000 bribe from Medtronic (a medical device company) for fudging experimental data to help Medtronic sell one of their spine products. Interestingly enough, this is NOT the first time Medtronic has been accused of shady practice. There is even a whole website devoted to lawsuits for Medtronic products. My question is, how often do you think this kind of stuff happens amongst the scientific community that we havent found out about yet? Article