1Canto JG, Fincher C, Kiefe CI, Allison J J, Li Q, Funkhouser E, Centor RM, Selker HP, Weissman NW. Atypical presentations among medicare beneficiaries with unstable angina pectoris[J]. The American journal of cardiology. 2002 ;90:248-253.
2El-Menyar A, Zubaid M, Sulaiman K, A1Mahmeed W, Singh R, Alsheikh-Ali AA, A1 Suwaidi J, Gulf Registry Acute C. Atypical presentation of acute coronary syndrome: A significant indepen- dent predictor of in-hospital mortality[J]. Journal of Cardiology. 2011;57:165-171.