J. Heim

Early evening ranitidine administration promotes faster duodenal ulcer healing.

L. Witzel, M. Panijel, H. Merki, 1988, The American journal of gastroenterology.

Effect of Wy-45,727 on 24 h intragastric acidity in twenty normal volunteers.

A. Mappes, H. Merki, R. Walt, 1989, British journal of clinical pharmacology.

Double blind comparison of the effects of cimetidine, ranitidine, famotidine, and placebo on intragastric acidity in 30 normal volunteers.

L. Witzel, A. Mappes, H. Merki, 1988, Gut.

Day-to-day variation of 24-hour intragastric acidity.

L. Witzel, A. Mappes, H. Merki, 1988, Gastroenterology.

Comparison of ranitidine 300 mg twice daily, 300 mg at night and placebo on 24‐hour intragastric acidity of duodenal ulcer patients

L. Witzel, A. Mappes, H. Merki, 1987, Alimentary pharmacology & therapeutics.