Response to Comment on "Association of Intestinal Disorders with Parkinson's Disease and Alzheimer's Disease: A Systematic Review and Meta-Analysis".

The commentary authors suggested removing one reference from the meta-analysis of PD and SIBO from our previously published article. We explained the reason why the mentioned study was included in the analysis. Furthermore, we provided the new result by re-meta-analyzing the PD and SIBO with the mentioned study removed and found the result was stable to the previous one. We make this response to clarify the potential confusion from this issue.