Professor Jens Cosedis Nielsen was appointed Professor of Electrophysiology at Aarhus University in 2011, and from 2021 Co-director of Department of Cardiology at Aarhus University Hospital. Born 1964 in Denmark, Jens Cosedis Nielsen studied medicine at Aarhus University and obtained his MD in 1991. Defended his PhD thesis on optimal pacing mode in patients with sick sinus syndrome in 2000 and worked as a fellow in internal medicine and cardiology at Danish hospitals until 2004. Following a year at Herzzentrum Leipzig (2004-2005), Jens Cosedis Nielsen earned a position as Associate Consultant at the Department of Cardiology, Aarhus University Hospital in 2007. The same year, he defended his doctoral thesis on pacing mode selection in patients with sick sinus syndrome. In 2011, Jens Cosedis Nielsen was appointed Professor of Electrophysiology at Aarhus University, and from 2021 Co-director of Department of Cardiology at Aarhus University Hospital. Professor Nielsen’s research group focuses primarily on device therapy, cardiac resynchronization therapy, device complications and outcome after device therapy, but also strives to improve catheter ablation for atrial

fibrillation. Jens Cosedis Nielsen accounts for 280 publications in international journals, and has an H-index 44.