Assessing the diagnostic accuracy of routine hematoxylin and eosin, Alcian Blue/Periodic Acid-Schiff, and Giemsa stains in the detection of Helicobacter pylori in gastric biopsies

评估常规苏木精-伊红染色、阿利新蓝/过碘酸-雪夫染色和吉姆萨染色在胃活检中检测幽门螺杆菌的诊断准确性