Effectiveness and safety of a novel modified homemade snare in retrograde percutaneous coronary intervention for chronic total occlusion lesions: a retrospective cohort study - Zhang, Tao; Zhang, Yuchen; Feng, Tingting; Zhao, Lin (Journal of Thoracic Disease; Vol 16, No 5 (May 31, 2024): Journal of Thoracic Disease, 2024)