TY - JOUR AU - Aiken, L H; Sloane, D M; Bruyneel, L TI - Nurse staffing and education and hospital mortality in nine European countries: A retrospective observational study JO - Lancet VL - 383 PY - 2014 DO - 10.1016/S0140-6736(13)62631-8 L3 - PubMed-ID: 24581683 SP - 1824 EP - 1830 N1 - et al. ER -