<span>Complications related to gallstones can included but not limited, common complications could be being acute cholecystitis which is a sudden inflammation of the gallbladder,this can cause severe abdominal pain, nausea, vomiting, and fever. These are just some complications that a elderly patient could have</span>
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What task do you what to accomplish?
For this answer I would go with D. Retinalogic. It is not a vitamin.