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Average length of hospitalizations for sarcoidosis, Still’s disease, and scleroderma, and the average length of hospitalizations in Poland (POL AV) and the European Union (EU AV) in the years 2008–2020 for all reported hospitalization cases. AV – average; POL – Poland; EU – European Union. Software: R Core Team (2021). R (Version 4.1.1): A language and environment for statistical computing. R Foundation for Statistical Computing, Vienna, Austria.
