Hiatal hernia investigated by pH telemetering.
D004381:Duodenal Ulcer / Q000378:metabolism; D004943:Esophagogastric Junction; D005764:Gastroesophageal Reflux; D006548:Hernia, Diaphragmatic / Q000378:metabolism*; D006801:Humans; D006863:Hydrogen-Ion Concentration; D013686:Telemetry