1 Professor emeritus and adjunct professor in the School of Dentistry, University of Missouri, Kansas City, MO, USA; Member of the Journal of Dental Hygiene Editorial Advisory Board.
2 Clinical professor emeritus and an adjunct professor in the College of Dentistry, Department of Dental Hygiene and Dental Assisting, New York University, New York, NY, USA; Member of the Journal of Dental Hygiene Editorial Advisory Board.