((ti:"blood services" or ti:"blood service" or ti:"servicos de sangue" or ti:"servico de sangue" or ti:"servicios de sangre" or ti:"servicio de sangre") OR ((mh:"Blood Transfusion" or ti:"Blood Transfusion" or ti:"Transfusión Sanguínea" or ti:"Transfusão de Sangue" or ti:"Blood Transfusions" or ti:"Transfusiónes Sanguíneas" or ti:"Transfusoes de Sangue") AND (mh:"blood banks" or ti:BLDBK or ti:"blood bank" or ti:"blood banks" or ti:"Bancos de Sangre" or ti:"Banco de Sangre" or ti:"Banco de Sangue" or ti:"Bancos de Sangue" or tw:"blood services" or tw:"blood service" or tw:"servicos de sangue" or tw:"servico de sangue" or tw:"servicios de sangre" or tw:"servicio de sangre")))
Databases
MEDLINE, LILACS, CDSR - Cochrane Systematic Reviews Database, CENTRAL Controlled Clinical Trials : CENTRAL Controlled Clinical Trials, DARE - Database of Abstracts of Review of Effects, NHS Economic Evaluations Database, HTA - Health Technology Assessment Database, WHOLIS (WHO Library Database), PAHO (PAHO Library Database), All VHL data bases.
