?:authorAffiliation
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[\'Division of Medical Genetics and Metabolism, Massachusetts General Hospital, Boston, Massachusetts, USA.\', \'Department of Pediatrics, Harvard Medical School, Boston, Massachusetts, USA.\', \'Advocate Medical Group Adult Down Syndrome Center, Park Ridge, Illinois, USA.\', \'Division of Child Neurology, Duke University Medical Center, Durham, North Carolina, USA.\', \'Department of Medicine, Baylor College of Medicine, Houston, Texas, USA.\', \'Department of Family and Community Medicine, Baylor College of Medicine, Houston, Texas, USA.\', \'Department of Family and Community Medicine, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.\', \'Division of General Internal Medicine, The University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA.\', \'Kennedy Krieger Institute, Baltimore, Maryland, USA.\']
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