A multicenter, double-blind study to evaluate the safety and therapeutic efficacy of omeprazole 20 mg once daily or 10 mg once daily as compared to placebo during 12-24 months maintenance treatment of patients with duodenal ulcer healed following 4 weeks of omeprazole 20 mg once daily.
Endpoint Classification: -
Intervention Model: -
Primary Purpose: -
Verified 01 Nov 2013 by AstraZeneca
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