Ductus Arteriosus, Patent

• 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

• University Hopsital — Angers, France
• University Hopsital — Bordeaux, France
• University Hospital — Créteil, France
• University Hospital — Grenoble, France

• Children's Hospital and Health Center — San Diego, California, United States
• University of California San Francisco Hospital — San Francisco, California, United States
• The Children's Hospital - Denver — Aurora, Colorado, United States
• Alfred I. DuPont Hospital for Children -Nemours Cardiac Center — Wilmington, Delaware, United States

Not specified

• University of California San Diego — San Diego, California, United States
• Sharp Mary Birch Hospital for Women and Newborns — San Diego, California, United States
• University of California San Francisco — San Francisco, California, United States
• Mednax Neonatology of San Jose/Pediatrix Medical Group — San Jose, California, United States

• CHU Amiens — Amiens, France

Not specified

• Post Graduate Institute of Medical Education and Research — Chandigarh, India

• 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

• University Medical Center — Ulm, Baden-Wurttemberg, Germany