https://www.mdanderson.org/cancerwise/what-is-hematemesis--vomiting-blood--explained.h00-159774867.html
What is hematemesis? Vomiting blood, explained | UT MD Anderson
What is hematemesis, and what should you know about this alarming symptom? Gastrointestinal medical oncologist Jaffer Ajani, M.D., explains.
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