Ductus Arteriosus, Patent

• University of Alabama — Birmingham, Alabama, United States
• Arkansas Children's Hospital — Little Rock, Arkansas, United States
• Children's Hospital Los Angeles — Los Angeles, California, United States
• Cedars-Sinai Medical Center — Los Angeles, California, United States

• LeBonheur Children's Hospital — Memphis, Tennessee, United States

• Rambam Medical Center — Haifa, Israel

• Azienda Ospedaliero Universitaria Careggi - Neonatologia e Terapia Intensiva Neonatale — Florence, Italy
• IRCCS "Giannina Gaslini" Genova - Patologia Neonatale e Terapia Intensiva Neonatale — Genova, Italy
• Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico U.O. di Neonatologia e Terapia Intensiva Neonatale — Milan, Italy
• Azienda Ospedaliera Istituti Clinici di Perfezionamento (ICP) - Ospedale dei Bambini "Vittore Buzzi" Milano - Neonatologia — Milan, Italy

• CHU Amiens — Amiens, France

• Mattel Children's Hospital at UCLA — Los Angeles, California, United States
• Children's Hospital Central California — Madera, California, United States
• Children's Hospital of Orange County — Orange, California, United States
• A.I. Dupont Hospital for Children — Wilmington, Delaware, United States

Not specified

• University of Alabama at Birmingham — Birmingham, Alabama, United States
• Stanford University — Palo Alto, California, United States
• University of Miami — Miami, Florida, United States
• Emory University — Atlanta, Georgia, United States

• The Hospital of the University of Pennsylvania — Philadelphia, Pennsylvania, United States
• Pennsylvania Hospital — Philadelphia, Pennsylvania, United States

Not specified