1. 1. Ahn JM, Lee KH, Yoo SY, et al. Prognosis of variant angina manifesting as aborted sudden cardiac death. J Am Coll Cardiol 68: 137-145, 2016.
2. 2. Sueda S, Kohno H. Optimal medications and appropriate implantable cardioverter-defibrillator shocks in aborted sudden cardiac death due to coronary spasm. Intern Med 57: 1361-1369, 2018.
3. 3. Toyosaki N, Toyo-oka T, Natsume T, et al. Combination therapy with diltiazem and nifedipine in patients with effort angina pectoris. Circulation 6: 1370-1375, 1988.
4. 4. Sueda S, Kohno H, Miyoshi T, Sasaki Y, Sakaue T, Habara H. Spasm provocation tests performed under medical therapy: a new approach for treating patients with refractory coronary spastic angina on emergency admission. Intern Med 53: 1739-1747, 2014.
5. 5. Sueda S, Kohno H, Ochi T, Uraoka T, Tsunemitus K. Overview of the pharmacological spasm provocation test: comparisons between acetylcholine and ergonovine. J Cardiol 69: 57-65, 2017.