Perren A, Previsdomini M, Perren I, Merlani P. High accuracy of the nine equivalents of nursing manpower use score assessed by critical care nurses. Swiss Med Wkly [Internet]. 2012 Mar. 25 [cited 2024 Apr. 19];142(1314):w13555. Available from: https://smw.ch/index.php/smw/article/view/1459