[Analysis of duodenogastric reflux symptoms in patients from Russia].
Ivanikov
I
I
D004383:Duodenogastric Reflux / Q000175:diagnosis* / Q000453:epidemiology*; D005260:Female; D006356:Heartburn / Q000175:diagnosis* / Q000453:epidemiology*; D006801:Humans; D008297:Male; D012426:Russia / Q000453:epidemiology