esophageal atresia causespathophysiology of esophageal atresiaesophageal atresia managementesophageal atresia repairesophageal and intestinal atresiaesophageal atresia operationcongenital esophageal atresiaesophageal atresia diagnosisesophageal atresia prognosisisolated esophageal atresiaproximal esophageal atresianeonatal esophageal atresia