Add Li et al. 2025 (Int J Cardiol) as a candidate reference PDF ...

Systematic review of no-reflow prediction models after PCI (Int J
Cardiol. 2025;439:133603) — not yet cited in the manuscript or added
to references.bib; kept here for future use. Notable finding for this
project: none of the 25 reviewed prediction models use IVUS data,
which is useful novelty-argument material for Related Work.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>