1. Symptoms and quality of life measures in peptic ulcer patients with maintenance compared with intermittent forms of ranitidine therapy;Fisher;Hell J Gastroenterol,1992
2. Nine years of maintenance treatment with ranitidine for patients with duodenal ulcer disease;Penston;Aliment Pharmacol Ther,1992
3. Safety of higher doses of ranitidine in the treatment of acid-peptic diseases;McIsaac;Am J Gastroenterol,1992
4. Safety profile of long-term HE-antagonist therapy;Lewis;Aliment Pharmacol Ther,1991