Smoking is associated with the increased risk of gastroduodenal ulcer. However, although smoking status can vary over time, most of studies have analyzed this association with smoking status at a… Click to show full abstract
Smoking is associated with the increased risk of gastroduodenal ulcer. However, although smoking status can vary over time, most of studies have analyzed this association with smoking status at a single point of time. We analyzed the risk of gastroduodenal ulcer according to change in smoking status for more than 5 years.
               
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