Don't remember, sorry. It was a lot of time ago. The articles should be listed in scientific indexes. Dentists are a special group that worked a lot with mercu

Don't remember, sorry. It was a lot of time ago. The articles should be listed in scientific indexes. Dentists are a special group that worked a lot with mercury in the past, dunno if is related but it could be a combination of risk factors. We should ask a chemist. In any case today the facts can be very different.