The angiotensin II type 1 receptor gene polymorphism is associated with coronary artery vasoconstriction. - Amant,C.; Hamon,M.; Bauters,C.; Richard,F.; Helbecque,N.; McFadden,E.P.; Escudero,X.; Lablanche,J.M.; Amouyel,P.; Bertrand,M.E. (J Am Coll Cardiol, 1997)