Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Thomas Hansen and Thomas S. Nilsen and Baeksan Yu and Marit Knapstad and Jens Christoffer Skogen and Øystein Vedaa and Ragnhild Bang Nes,Locked and lonely? A longitudinal assessment of loneliness before and during the COVID-19 pandemic in Norway,Scandinavian Journal of Public Health,1403-4948,SAGE Publications,2021-03-01,49,7,766-773,https://cir.nii.ac.jp/crid/1360294647569047808,https://doi.org/10.1177/1403494821993711