Add Wang et al. 2020 (TCRM) as a candidate reference PDF ...

Incidence, Predictors, and Prognosis of Coronary Slow-Flow and
No-Reflow Phenomenon in CTO Patients Undergoing PCI (Ther Clin Risk
Manag. 2020;16:95-101) — not yet cited in the manuscript or added to
references.bib; kept here for future use, though its CTO-specific
population limits how directly it applies to this manuscript's claims.

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