LabelECG: A Web-Based Tool for Distributed Electrocardiogram Annotation. - Zijian Ding; Shan Qiu; Yutong Guo; Jianping Lin; Li Sun; Dapeng Fu; Zhen Yang; Chengquan Li; Yang Yu; Long Meng; Tingting Lv; Dan Li; et al. (MLMECH/CVII-STENT@MICCAI, 2019)