R Johnsen, B Bernersen, B Straume, O H Førde, L Bostad, P G Burhol et al
Johnsen R, Bernersen B, Straume B, Førde O H, Bostad L, Burhol P G et al.
Prevalences of endoscopic and histological findings in subjects with and without dyspepsia.
British Medical Journal 1991; 302 :749
doi:10.1136/bmj.302.6779.749