Optical coherence tomography (OCT) vs intravascular ultrasound (IVUS) in diagnosing the mechanisms of in-stent restenosis in drug eluting stents. - Saad, Moustafa Kamal Eldin Ibrahim Khalil; Abdelaziz, Ahmad; Fathelbab, Fatma; elmallawany, Mahmoud Mohamed Mahmoud Abdallah; Elkashab, Khalied Ahmad Emam (Romanian Journal of Cardiology, 2026)