Adwords Complaints

How do I do it?

[olwen]

I just found a sponsored ad for a medical procedure I understand to be dangerous to the extent that I thought it had been banned, Apparently not, but how would I lay a complaint about the ad?

[fathom]

Google: Contact us: Praise and complaints [google.com]

[vibgyor79]

[e-mail] would be better since it was an AdWords advertisement.