Wolfisberg, Selina, Claudia Gregoriano, Tristan Struja, Alexander Kutz, Daniel Koch, Luca Bernasconi, Angelika Hammerer-Lercher, Christine Mohr, Sebastian Haubitz, Anna Conen, Christoph A. Fux, Beat Mueller, and Philipp Schuetz. “Comparison of Characteristics, Predictors and Outcomes Between the First and Second COVID-19 Waves in a Tertiary Care Centre in Switzerland: An Observational Analysis”. Swiss Medical Weekly 151, no. 3132 (August 10, 2021): w20569. Accessed April 25, 2024. https://smw.ch/index.php/smw/article/view/3044.