%0 Journal Article %B Lancet %D 2021 %I Elsevier BV %N 10288 %P 1905-1913 %R 10.1016/s0140-6736(21)00768-6 %T Effects of nurse-to-patient ratio legislation on nurse staffing and patient mortality, readmissions, and length of stay: a prospective study in a panel of hospitals %V 397 %8 05/2021 %& 1905-1913