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To the Editor: A 65-year-old patient was admitted into Department of Coronary Heart Disease of The First Affiliated Hospital on June 10,2014 because of "paroxysmal chest pain for 13 years and relapsed and aggravated for 5 days." Patient experienced squeezing pain in the precordium with chest congestion, palpitation, and excessive perspiration but without any spreading, nausea and vomiting under no any apparent incentives 13 years ago.