P. G. Burhol

Aetiology of peptic ulcer: a prospective population study in Norway.

O. Førde, R. Johnsen, B. Straume, 1994, Journal of epidemiology and community health.

Is Helicobacter pylori the cause of dyspepsia?

L. Bostad, R. Johnsen, B. Straume, 1992, BMJ.

Plasma vasoactive intestinal polypeptide, insulin, gastric inhibitory polypeptide, and blood glucose in late pregnancy and during and after delivery.

R. Jorde, T. Jenssen, J. Maltau, 1986, American journal of obstetrics and gynecology.