| http://www.w3.org/ns/prov#value | - However, HPVG has occurred with various conditions, some of which were cured with conservative management alone, including digestive tract dilatation,7,16- 20 gastric ulcer,9,11,21,22 ulcerative colitis,23 Crohn disease,24- 28 and complications of endoscopic procedures.29- 34 However, other cases were potentially lethal, and an emergency operation has been recommended in conditions such as abscess
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