Schwab C, Le Moigne A, Fernandez C, Durieux P, Sabatier B, Korb-Savoldelli V. External validation of the 80+ score and comparison with three clinical scores identifying patients at least 75 years old at risk of unplanned readmission within 30 days after discharge. Swiss Med Wkly [Internet]. 2018 May 14 [cited 2024 Nov. 27];148(1920):w14624. Available from: https://smw.ch/index.php/smw/article/view/2477