Coronary Artery Spasm: References

Prinzmetal's or Printzmetal angina, variant angina and angina inversa. American Heart Association. http://www.heart.org/HEARTORG/Conditions/HeartAttack/SymptomsDiagnosisofHeartAttack/Prinzmetals-Angina-Variant-Angina-and-Angina-Inversa_UCM_435674_Article.jsp. Updated September 16, 2015. Accessed August 2016.

Pinto DS, Beltrame JF, Crea FC, et al. Vasospastic angina. UpToDate. http://www.uptodate.com/contents/vasospastic-angina. Updated October 27, 2015. Accessed August 2016.