Double blind - a test procedure in which the identity of those receiving the intervention is concealed from both the administrators and the subjects until after the test is completed; designed to reduce or eliminate bias in the results Según la página de estadísticas de YouTube en el mes de https://analisisdepuestodetrabajo24678.thekatyblog.com/35129381/análisis-de-puesto-de-trabajo-ergonomía-no-hay-más-de-un-misterio