Self-sampling for analysis of respiratory viruses in a large-scale epidemiological study in Sweden Plymoth, A and Rotzén-Östlund, M and Zweygberg-Wirgart, B and Sundin, C G and Ploner, A and Nyrén, O and Linde, A, Eurosurveillance, 20, 21063 (2015), https://doi.org/10.2807/1560-7917.ES2015.20.11.21063