Owing to the oversight by the typesetters, two affiliations of Professor Carolyn G.J. Moonen were incorrectly published in the online version of the chapter. The two affiliations published are Bruker Corporation, Leiderdorp, and Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam, Amsterdam, the Netherlands. ACTA is the correct one and Bruker is incorrect. It is important to this author to have Bruker removed, as the company has not specifically agreed on being mentioned in his chapter.