The past, present, and future perfect profession.
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D005544:Forecasting; D049673:History, 20th Century; D006801:Humans; D021661:Management Service Organizations; D008389:Marketing of Health Services; D009970:Orthodontics / Q000193:education / Q000266:history / Q000458:organization & administration / Q000639:trends*; D009971:Orthodontics, Corrective / Q000266:history / Q000639:trends; D011215:Practice Management, Dental / Q000458:organization & administration / Q000639:trends; D013674:Technology, Dental