Frequency of the asymptomatic lower esophageal contractile ring

N Engl J Med. 1956 Apr 12;254(15):692-4. doi: 10.1056/NEJM195604122541503.
No abstract available

MeSH terms

  • Congenital Abnormalities*
  • Deglutition Disorders / etiology*
  • Deglutition*
  • Esophageal Diseases*
  • Esophagus / abnormalities*
  • Humans
  • Muscle Contraction*