Can Oral Sex Cause Throat Cancer?

Michael Douglas was diagnosed with throat cancer (oropharyngeal cancer) three years ago. He initially said it was caused by years of heavy smoking, alcohol abuse and stress. However, he recently told The Guardian newspaper that it was caused by oral sex (cunnilingus). In an Interview with Guardian reporter, Xan Brooks, Douglas said that his type of cancer was caused by the human papillomavirus (HPV) "which actually comes from cunnilingus"...