title: The lower oesophageal sphincter and regurgitation.
mesh_terms: D000768:Anesthesia, General / Q000009:adverse effects; D000773:Anesthesia, Obstetrical / Q000379:methods*; D004943:Esophagogastric Junction / Q000502:physiology*; D005260:Female; D005764:Gastroesophageal Reflux / Q000209:etiology / Q000517:prevention & control*; D006801:Humans; D001239:Inhalation; D008168:Lung; D011247:Pregnancy