Simsek B, Tajti P, Carlino M, Rinfret S, Vemmou E, Kostantinis S, Nikolakopoulos I, Karacsonyi J, Agostoni P, Alaswad K, Megaly M, Avran A, Choi J, Khatri J, Knaapen P, La Manna A, Spratt J, Rangan B, Goktekin O, Kearney K, Lombardi W, Grantham J, Mashayekhi K, Brilakis E, Azzalini L. EXTERNAL VALIDATION OF THE PROGRESS-CTO COMPLICATION RISK SCORES: INDIVIDUAL PATIENT DATA POOLED ANALYSIS OF 3 REGISTRIES. Journal Of The American College Of Cardiology 2023, 81: 777. DOI: 10.1016/s0735-1097(23)01221-4.Peer-Reviewed Original Research