In a new paper, the Geiers, pere et fils, expert data miners, find that the severity of autism in affected children increases with the number of maternal amalgam fillings.

A prospective study of prenatal mercury exposure from maternal dental amalgams and autism severity
David A. Geier, Janet K. Kern, and Mark R. Geier

Acta Neurobiol Exp 2009, 69: 1Ð9