The Main Symptom is HematemesisLea U. Krauss,Stephan Schmid,Patricia Mester,Kirsten Utpatel,Martina Mueller-Schilling,Vlad PavelGASTROENTEROLOGIE(2024)Cited 0|Views2AI Read ScienceMust-Reading TreeExampleGenerate MRT to find the research sequence of this paperChat PaperSummary is being generated by the instructions you defined