Louw, J. A., Falck, V., van Rensburg, C., Zak, J., Adams, G., & Marks, I. N. (1993). Distribution of Helicobacter pylori colonisation and associated gastric inflammatory changes: Difference between patients with duodenal and gastric ulcers.

Louw, J A., V. Falck, C. van Rensburg, J. Zak, G. Adams, and I N. Marks. Distribution of Helicobacter Pylori Colonisation and Associated Gastric Inflammatory Changes: Difference between Patients With Duodenal and Gastric Ulcers. 1993.

Louw, J A., et al. Distribution of Helicobacter Pylori Colonisation and Associated Gastric Inflammatory Changes: Difference between Patients With Duodenal and Gastric Ulcers. 1993.