[Viggo Andresen--the originator of orthodontic therapy involving the use of oral activators].
Ingelsson
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M
Forsberg
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CM
D000202:Activator Appliances / Q000266:history*; D049673:History, 20th Century; D009968:Orthodontic Appliances, Removable / Q000266:history*; D009971:Orthodontics, Corrective / Q000266:history*
Viggo Andresen--aktivatorterapins fader.