Plasma indole-3-aldehyde as a novel biomarker of acute kidney injury after cardiac surgery: a reanalysis using prospective metabolomic data. - Hu, Linhui; Bai, Yunpeng; Lai, Changchun; Mo, Leitong; Li, Ying; Jiang, Xinyi; Xu, Wang; He, Yuemei; Zhou, Xinjuan; Chen, Chunbo (BMC Anesthesiology, 2023)