Response to Letter Regarding Article, "Myosin Activator Omecamtiv Mecarbil Increases Myocardial Oxygen Consumption and Impairs Cardiac Efficiency Mediated by Resting Myosin ATPase Activity". (November 2015) - Bakkehaug, Jens Petter; Kildal, Anders Benjamin; Engstad, Eirik Torgersen; Boardman, Neoma; Næsheim, Torvind; Rønning, Leif; Aasum, Ellen; Larsen, Terje S.; Myrmel, Truls; How, Ole-Jakob