Zürcher K, Zwahlen M, Berlin C, Egger M, Fenner L. Trends in influenza vaccination uptake in Switzerland: Swiss Health Survey 2007 and 2012. Swiss Med Wkly [Internet]. 2019 Jan. 23 [cited 2024 Apr. 19];149(0304):w14705. Available from: https://smw.ch/index.php/smw/article/view/2570