1 Boston Children's Hospital and Harvard Medical School, Boston, MA, United States of America. Electronic address: Susan.waisbren@childrens.harvard.edu.
2 Clinical Neuropsychology Laboratory, University of Missouri, Columbia, MO, United States of America.
3 Huntsman Mental Health Institute, University of Utah, Salt Lake City, UT, United States of America.
4 3:1 Neuropsychology Consultants, PLLC, Aurora, CO, United States of America.
5 flok Health.org (advocacy and research organization), Montclair, NJ, United States of America.
6 Tower Health Medical Group, St. Christopher's Hospital for Children, and Drexel College of Medicine, Philadelphia, PA, United States of America.
7 Doernbecher Children's Hospital and Oregon Health & Science University, Portland, OR, United States of America.
8 Ann & Robert H. Lurie Children's Hospital, Division of Genetics, Genomics and Metabolism, Chicago, IL, United States of America.
9 Lubliner Psychological Services, Miller Place, NY and Hofstra University, Hempstead, NY, United States of America.
10 Department of Pediatrics, Section of Neurology, Children's Hospital Colorado and University of Colorado School of Medicine, Aurora, CO, United States of America.
11 National PKU Alliance, United States of America.
12 ICON Insights, Evidence and Value, Raleigh, NC, United States of America.
13 University of Arkansas for Medical Sciences, Little Rock, AR, United States of America.
14 Children's Hospital of Philadelphia, Philadelphia, PA, United States of America.
15 Children's Hospital of Colorado, University of Colorado Schools of Medicine and Public Health, Aurora, CO, United States of America.