title: Dr. Down and "developmental disorders".
authors.forename: Darold A
authors.initials: DA
authors.lastname: Treffert
mesh_terms: D000367:Age Factors; D003072:Cognition Disorders / Q000175:diagnosis / Q000266:history*; D004314:Down Syndrome / Q000266:history*; D049672:History, 19th Century; D006801:Humans; D008607:Intellectual Disability / Q000175:diagnosis; D011582:Psychological Theory; D011584:Psychology / Q000266:history