Response by Bonde and Martinussen to Letter Regarding Article, “Rivaroxaban Versus Apixaban for Stroke Prevention in Atrial Fibrillation: An Instrumental Variable Analysis of a Nationwide Cohort”

“Response by Bonde and Martinussen to Letter Regarding Article, “Rivaroxaban Versus Apixaban for Stroke Prevention in Atrial Fibrillation: An Instrumental Variable Analysis of a Nationwide Cohort”.” Circulation: Cardiovascular Quality and Outcomes, 13(8), pp. –