Cagnacci, A Effect of exogenous melatonin on vascular reactivity and nitric oxide in postmenopausal women: role of hormone replacement therapy. [electronic resource] - Clinical endocrinology Feb 2001 - 261-6 p. digital Publication Type: Clinical Trial; Journal Article; Randomized Controlled Trial ISSN: 0300-0664 Standard No.: 10.1046/j.1365-2265.2001.01204.x doi Subjects--Topical Terms: Analysis of VarianceBlood Pressure--drug effectsCardiovascular Diseases--prevention & controlCarotid Artery, Internal--diagnostic imagingDouble-Blind MethodEstrogen Replacement TherapyFemaleHumansMelatonin--therapeutic useMiddle AgedNitric Oxide--bloodPostmenopause--metabolismPulsatile Flow--drug effectsUltrasonography, Doppler, ColorVasodilation--drug effects