1 Laboratory of Computer Science, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.
2 Department of Medicine, Harvard Medical School, Boston, MA, USA.
3 Health Policy Research Center, Mongan Institute, Massachusetts General Hospital, Boston, MA, USA.
4 Biostatistics Center, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA.
5 Down Syndrome Program, Division of Medical Genetics and Metabolism, Department of Pediatrics, Massachusetts General Hospital, Boston, MA, USA.
6 Department of Pediatrics, Harvard Medical School, Boston, MA, USA.
7 Down Syndrome Association of Los Angeles, Los Angeles, CA, USA.
8 Trustee, The Riverview School, East Sandwich, MA, USA.
9 Department of Pediatrics, Indiana University School of Medicine, Indianapolis, IN, USA.
10 Advocate Medical Group Adult Down Syndrome Center, Park Ridge, IL, USA.
11 Massachusetts Down Syndrome Congress, Boston, MA, USA.
12 Department of Internal Medicine and Pediatrics, Oregon Health & Science University, Portland, OR, USA.
13 Health and Wellness, University of New Hampshire, Durham, NH, USA.
14 Department of Pediatrics, University of Washington School of Medicine, Seattle, WA, USA.
15 Health Decision Sciences Center, Massachusetts General Hospital, Boston, MA, USA.
16 Down Syndrome Program, Division of Medical Genetics and Metabolism, Department of Pediatrics, Massachusetts General Hospital, Boston, MA, USA. bskotko@mgh.harvard.edu.
17 Department of Pediatrics, Harvard Medical School, Boston, MA, USA. bskotko@mgh.harvard.edu.