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Zur Diagnostik und Quantifizierung der gastroösophagealen Refluxkrankheit steht eine Vielzahl von Untersuchungen zur Verfügung. Am einfachsten ist die Anamnese und Symptomerhebung sowie der Protonenpumpenhemmertest, die jeweils einen positiven prädiktiven Wert von 65–70% haben. Die Ösophagoduodenoskopie ist der Goldstandard zur Differenzierung von erosiver und nichterosiver Refluxkrankheit. Die Biopsie...
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