Author Keyword workflow:
1. Author Keywords (DE) were cleaned using the prespecified terminology dictionary.
2. Synonyms, spelling/case variants, punctuation variants, and selected singular/plural variants were normalized.
3. Keywords were deduplicated within individual records.
4. The cleaned Author Keyword data were imported into VOSviewer 1.6.21.
5. Co-occurrence analysis used full counting and a minimum occurrence threshold of five.
6. Sixty-three keywords met the threshold.
7. The final network contained 561 links, six VOSviewer clusters, and a total link strength of 2,235.
8. VOSviewer map/network outputs were exported.
9. R was used only to produce publication-quality rendering from the exported VOSviewer analytical results.

Country, institution, and author co-authorship networks were also exported from VOSviewer 1.6.21 and retained in this bundle.
