How to deliver personalized Cardiac Resynchronization Therapy through the precise measurement of the acute hemodynamic response: insights from the iSpot trial - ShunShin, MJ; Miyazawa, AA; Keene, D; Sterliski, M; Sokal, A; Heuverswyn, F; Rinaldi, CA; Cornelussen, R; Stegemann, B; Francis, DP; Whinnett, Z (Journal of Cardiovascular Electrophysiology, 2019)