APA (7th ed.) Citation

Sipponen, P. Helicobacter pylori and gastric cancer.

Chicago Style (17th ed.) Citation

Sipponen, P. Helicobacter Pylori and Gastric Cancer.

MLA (9th ed.) Citation

Sipponen, P. Helicobacter Pylori and Gastric Cancer.

Warning: These citations may not always be 100% accurate.