Machine Learning Identifies Metabolic Signatures that Predict the Risk of Recurrent Angina in Remitted Patients after Percutaneous Coronary Intervention: A Multicenter Prospective Cohort Study. - Cui, Song; Li, Li; Zhang, Yongjiang; Lu, Jianwei; Wang, Xiuzhen; Song, Xiantao; Liu, Jinghua; Li, Kefeng (Advanced Science, 2021)