Impaired left atrial dynamics and its improvement by guided physical activity reveal left atrial strain as a novel early indicator of reversible cardiac dysfunction in rheumatoid arthritis. (29th August 2020) - Venkateshvaran, Ashwin; Sarajlic, Philip; Lund, Lars H; Fridén, Cecilia; Nordgren, Birgitta; Opava, Christina H; Lundberg, Ingrid E; Larsson, Susanna C; Manouras, Aristomenis; Bäck, Magnus