Archived from the original on 27 February 2018
An ulcer is an open sore or raw area that most commonly develops in one of 2 places: The lining of the stomach ( gastric ulcer ) The upper part of the small intestine -- the duodenum ( duodenal ulcer ) In the United States, duodenal ulcers are 3 times more common than gastric ulcers
doi:10.3390/medicines9040028 108
Waldum HL, Nilsen OG, Nilsen T, Rrvik H, Syversen V, Sanvik AK, et al
Surveillance and Evaluation Monitoring the achievement of program goals and evaluating implementation and outcomes increase efficiency and impact over time, demonstrate accountability, and provide credible information for programmatic decision making
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