“Characteristics, Comorbidities, 30-Day Outcome and in-Hospital Mortality of Patients Hospitalised With COVID-19 in a Swiss Area – a Retrospective Cohort Study”. Swiss Medical Weekly 150, no. 2930 (July 14, 2020): w20314. Accessed February 2, 2026. https://www.smw.ch/index.php/smw/article/view/2828.