is an expert in gastroesophageal reflux disease and aerodigestive disorders. Yvan Vandenplas MD, PhD: YV is an expert in gastroesophageal reflux disease. Maartje Singendonk MD: MS is an expert in esophageal physiology. Michael Cabana MD: MC is a pediatrician with expertise in consensus guideline Carlo Di Lorenzo MD: CD is an expert in pediatric motility disorders and gastroesophageal reflux disease Frederic Gottrand MD: FG is an expert in esophagitis and gastroesophageal reflux disease Sandeep Gupta MD: SG is an expert in esophageal diseases. Miranda Langendam PhD: ML is aguideline methodologist Annamaria Staiano MD: AS is an expert in pediatric motility disorders and gastroesophageal reflux disease. Nikhil Thapar MD: NT is an expert in pediatric motility disorders. Neelesh Tipnis MD: NT is an expert in pediatric motility disorders. Merit Tabbers MD, PhD: MT is an expert in gastroesophageal reflux disease.