International Journal of Periodontics & Restorative Dentistry; 2006, Vol. 26 Issue 1, p18-29, 12p, 10 Color Photographs, 14 Black and White Photographs, 2 Charts, 2 Graphs
International Journal of Periodontics & Restorative Dentistry; 2001, Vol. 21 Issue 6, p560-567, 8p, 15 Color Photographs, 2 Black and White Photographs, 1 Chart