Here are the answers to the questions:

1. What tool was used for pathway enrichment analysis?
The tool used for pathway enrichment analysis is not described, but it mentions that the analysis was done using the "Kyoto Encyclopedia of Genes and Genomes (KEGG)".

2. Was a tool version number provided?
Not described.

3. What gene set library was queried (eg: GO, KEGG, Reactome or other)?
KEGG (Kyoto Encyclopedia of Genes and Genomes).

4. Was a background gene list defined for pathway enrichment analysis?
Not described.

5. What statistical test was used for enrichment analysis?
The statistical test used is not explicitly described, but it mentions that "Pathway terms with P<0.05 were considered statistically significant".

6. Was false discovery rate correction used to control the number of false positives in the pathway enrichment analysis?
Not described.