Operator experience and clinical outcomes of percutaneous coronary intervention for chronic total occlusion: insights from a pooled analysis of the Japanese CTO PCI Expert Registry and the Retrograde Summit General Registry. - Matsuno S; Habara M; Muramatsu T; Kishi K; Mutoh M; Oikawa Y; Yamane M; Sakurada M; Miyahara M; Tsuchikane E (Cardiovascular intervention and therapeutics, 2022)