Impact of frailty and mobility on mortality and symptomatic improvement in TAVR - Samer Fawaz; Christopher Cook; Ashni Chani; Sarosh Khan; Sanjay Rajput; John Davies; Thomas R Keeble; Rajesh Aggarwal; Rohan Jagathesan; Ozan M. Demir (International Journal of Cardiology: Heart & Vasculature)