Gastroesophageal Reflux

• Neonatal Intensive Care Unit of the S.Orsola-Malpighi Hospital — Bologna, Italy
• SC Neonatologia e Terapia Intensiva Neonatale, Ospedale dei Bambini "V. Buzzi" — Milan, Italy

• Department of Critical Care Medicine, Sanjay Gandhi Postgraduate Institute of Medical Sciences (SGPGIMS) — Lucknow, Uttar Pradesh, India

• Microbiome Health Sciences — Manassas, Virginia, United States

Not specified

• Nagoya, Aichi-ken, Japan
• Inzai, Chiba, Japan
• Kamagaya, Chiba, Japan
• Matsuyama, Ehime, Japan

• Mercy University Hospital — Cork, County Cork, Ireland

• Children's City Clinical Hospital named after Bashlyaeva, Healthcare department of Moscow city — Moscow, Russia
• Medical Center "St. Andrew's Hospitals - NEBOLIT" — Moscow, Russia

• IRCCS Policlinico San Donato — San Donato Milanese, Milan, Italy

• University of North Carolina at Chapel Hill — Chapel Hill, North Carolina, United States

• Faculty of Medicine, Universitas Indonesia — Jakarta Pusat, DKI Jakarta, Indonesia