Rapid potentiation of endothelium-dependent vasodilation by estradiol in postmenopausal women is mediated via cyclooxygenase 2 - Calkin,A.C.; Sudhir,K.; Honisett,S.; Williams,M.RI.; Dawood,T.; Komesaroff,P.A. (J Clin Endocrinol Metab, 2002)