What we do not know is the nature of the association. We do not know if the nature of the association is casual, or not, or whether it's due to chance alone.

We're very careful to be sure of what we're seeing, that it's not simply a manifestation of two diseases that have common risk to factors.

Our goal is to find out the truth, because periodontal disease is so prevalent, that if indeed it contributes something to cardiovascular disease, it's very important to know that. It's also very preventable.

Nature can refuse to speak but she cannot give a wrong answer.

It was a sterile presidency.

Maybe he does want to rehabilitate himself, but he does not speak, so we do not know.