Article Text
Letter
Haemorrhoidal disease reduces the risk of diverticular disease and irritable bowel syndrome: a Mendelian randomisation study
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Footnotes
ZZ and XC contributed equally.
Contributors All authors made significant contributions: ZZ and LC designed research; XC, SZ, and CW performed research; and ZZ and XC wrote the paper.
Funding This work was supported by the Tou-Yan Innovation Team Program of the Heilongjiang Province (2019-15), National Natural Science Foundation of China (62222104, 62172130, 61871160), and Heilongjiang Postdoctoral Fund (LBH-Q20030).
Competing interests None declared.
Provenance and peer review Not commissioned; internally peer reviewed.