%0 Journal Article
%K certification/accreditation of hospitals
%K experimental research
%K measurement of quality
%B Int J Qual Health Care
%D 2017
%G eng
%N 3
%P 406-411
%R 10.1093/intqhc/mzx039
%T Unannounced versus announced hospital surveys: a nationwide cluster-randomized controlled trial.
%V 29
%1 https://www.ncbi.nlm.nih.gov/pubmed/28419255
%8 06/2017