T‐786->C mutation in the 5′-flanking region of the endothelial nitric oxide synthase gene is associated with coronary spasm. - Nakayama,M.; Yasue,H.; Yoshimura,M.; Shimasaki,Y.; Kugiyama,K.; Ogawa,H.; Motoyama,T.; Saito,Y.; Ogawa,Y.; Miyamoto,Y.; Nakao,K. (Circulation, 1999)