1. The Craniofacial Measurement Laboratory, Craniofacial Program, Division of Plastic Surgery, The Hospital for Sick Children, Department of Surgery, University of Toronto, Canada.
2. The Department of Anthropology, Faculty of Natural Sciences, Charles University, Prague, Czechoslovakia.
3. The Craniofacial Program, Division of Plastic Surgery, The Hospital for Sick Children, and Department of Surgery, University of Toronto, Canada, and Craniomaxillofacial Surgery and Division of Plastic Surgery, Georgetown University Medical Center, Washington, DC.