Dr. John W Witzig, father of functional orthodontics in North America.
Yosh
Y
Jefferson
D049673:History, 20th Century; D049674:History, 21st Century; D006801:Humans; D009656:North America; D017289:Orthodontic Appliances, Functional / Q000266:history*; D009970:Orthodontics / Q000266:history*; D014481:United States