1. Preparing national health systems to cope with the impending tsunami of ageing and its associated complexities: towards more sustainable health care;Amalberti;Int. J. Qual. Health Care,2016
2. Nursing effort and quality of care for nursing home residents;Arling;The Gerontologist,2007
3. Prevalence, patterns and predictors of nursing care left undone in European hospitals: results from the multicountry cross-sectional RN4CAST study;Ausserhofer;BMJ Qual. Saf.,2013
4. Fitting linear mixed-effects models using lme4;Bates;J. Stat. Softw.,2015