这项研究是由美国国家卫生研究所和美国胃肠病协会资助。

This study was funded by the National Institute of Health and the American Gastroenterological Association.

youdao

这项研究是由美国国家卫生研究所和美国胃肠病协会资助。

This study was funded by the National Institute of Health and the American Gastroenterological Association.

youdao