Author information:
(1)Department of Physiology and Pharmacology, Schulich School of Medicine and 
Dentistry, Western University, London, ON N6A 5C1, Canada.
(2)Centre Hospitalier Universitaire Sainte-Justine Research Center, University 
of Montreal, Montreal, QC H3T 1C5, Canada.
(3)Department of Biology, Faculty of Science, Western University, London, ON N6A 
5B7, Canada; Division of Genetics and Development, Children's Health Research 
Institute, London, ON N6C 2V5, Canada.
(4)Department of Biology, Faculty of Science, Western University, London, ON N6A 
5B7, Canada.
(5)Department of Pediatrics, Central Hospital, Aichi Human Service Center, 
Kasugai 480-0392, Japan.
(6)Department of Human Genetics, Yokohama City University Graduate School of 
Medicine, Yokohama 236-0004, Japan.
(7)Faculty of Medicine, University of Southampton, Southampton SO17 1BJ, UK.
(8)Belfast City Hospital, Belfast BT9 7AB, Northern Ireland, UK.
(9)Division of Human Genetics, Children's Hospital of Philadelphia, 
Philadelphia, PA 19104, USA.
(10)APHP, Département de Génétique, Centre de Référence Déficiences 
Intellectuelles de Causes Rares, Groupe Hospitalier Pitié Salpêtrière et GHUEP 
Hôpital Trousseau, Paris, France.
(11)Institut National de la Santé et de la Recherche Médicale (INSERM), U 1127, 
CNRS UMR 7225, Sorbonne Universités, Université Pierre et Marie Curie (UPMC) 
Univ Paris 06 UMR S 1127, Institut du Cerveau et de la Moelle Épinière, 75013 
Paris, France; Institut de Génétique et de Biologie Moléculaire et Cellulaire, 
Centre National de la Recherche Scientifique, UMR 7104, INSERM U964, Université 
de Strasbourg, 67400 Illkirch, France; Institute of Human Genetics, University 
Hospital Essen, University of Duisburg, Essen, 45147 Essen, Germany.
(12)Birmingham Women's and Children's National Health Service Foundation Trust, 
Mindelsohn Way, Birmingham B15 2TG, UK.
(13)Department of Physiology and Pharmacology, Schulich School of Medicine and 
Dentistry, Western University, London, ON N6A 5C1, Canada; Department of 
Biology, Faculty of Science, Western University, London, ON N6A 5B7, Canada; 
Division of Genetics and Development, Children's Health Research Institute, 
London, ON N6C 2V5, Canada. Electronic address: james.kramer@schulich.uwo.ca.
(14)Centre Hospitalier Universitaire Sainte-Justine Research Center, University 
of Montreal, Montreal, QC H3T 1C5, Canada; Department of Pediatrics, University 
of Montreal, Montreal, QC H4A 3J1, Canada. Electronic address: 
p.campeau@umontreal.ca.