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Fig. 1

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D-to-B time cost of GC modified process and WCACG modified process. (A) GC process reduced D-to-B time process cost by 100 min from over 4 h originally traditional diagnosis process, but still wastes a lot of time on cardiac catheterization and diagnosis after the STEMI patient’s arrival at the emergency department. (B) Based on green channel modified process, WeChat modified process is a major help in reducing the time spent on cardiac catheterization, diagnosis, dissections between doctors and surgery preparation.