Coronary flow velocity reserve predicts adverse prognosis in women with angina and no obstructive coronary artery disease: results from the iPOWER study. - Schroder J; Michelsen MM; Mygind ND; Suhrs HE; Bove KB; Bechsgaard DF; Aziz A; Gustafsson I; Kastrup J; Prescott E (European heart journal, 2021)