165. INFECTIONS ARE ASSOCIATED WITH INCREASED RISK OF GIANT CELL ARTERITIS - A POPULATION-BASED CASE-CONTROL STUDY FROM SOUTHERN SWEDEN. (29th March 2019) - Stamatis, Pavlos; Turkiewicz, Aleksandra; Englund, Martin; Jönsson, Göran; Nilsson, Jan-Åke; Turesson, Carl; Mohammad, Aladdin