Persistent symptoms, cognitive impairment, and clinical predictors of long COVID one year after Omicron infection: A clinical case–control study from the Faroe Islands. - Helmsdal, Gunnhild; Kristiansen, Marnar Fríðheim; Gaard, Eyðbjørg Klemmentsen; Eysturoy, Barbara Joensen; Weihe, Pál; Eliasen, Eina Hansen; Petersen, Maria Skaalum (PLoS ONE, 2026)