Fig. 4From: The influence of the COVID-19 pandemic on surgical therapy and care: a cross-sectional studyPatient demographics stratified after analysis year as well as periods of high COVID-19 burden (COVID-19) from March to May and October to end of December 2020 compared to the corresponding reference (REF) period in 2018 and 2019. A, B Length of hospital stay in days 2019. B–D Patient age in yearsBack to article page