Urea Cycle Disorders, Inborn

• University Children's Hospital, Heinrich-Heine University — Düsseldorf, Germany
• University Children's Hospital — Heidelberg, Germany

• George Washington University School of Medicine — Washington D.C., District of Columbia, United States
• Georgetown University — Washington D.C., District of Columbia, United States

• Children's National Medical Center — Washington D.C., District of Columbia, United States
• Columbia University, Morgan Stanley Children's Hospital — New York, United States
• Medical College Wisconsin — Milwaukee, Wisconsin, United States

• CRS Clinical Research Services GmbH (Phase I Unit), Mönchengladbach, Germany
• Medizinische Hochschule Hannover, Klinik für Kinderheilkunde — Hanover, Germany
• Universitätsklinikum Heidelberg Klinik für Kinderheilkunde I — Heidelberg, Germany
• Universitätsklinikum Münster, Zentrum für Kinder- und Jugendmedizin — Münster, Germany

• CRS Clinical Research Services Mönchengladbach GmbH — Mönchengladbach, Germany

Not specified

• The Children's Hospital Colorado — Aurora, Colorado, United States
• Boston Children's Hospital — Boston, Massachusetts, United States
• Icahn School of Medicine — New York, United States
• University Hospital Cleveland Medical Center/Case Western Reserve University — Cleveland, Ohio, United States

• Children's Hospital Colorado — Aurora, Colorado, United States
• Children's National Medical Center — Washington D.C., District of Columbia, United States
• The Children's Hospital of Philadelphia — Philadelphia, Pennsylvania, United States
• Baylor College of Medicine — Houston, Texas, United States

• Nucleus Network Brisbane (also known as Q-Pharm Pty Ltd) — Herston, Queensland, Australia
• Erasmus MC — Rotterdam, Netherlands