BACKGROUND AND OBJECTIVE: To review current practice in the assessment of the
quality of original observational studies included in systematic reviews. MATERIALS AND …

OBJECTIVE: Delirium is frequent in elderly hospitalized patients. Many studies have
examined its risk factors, but results have been quite variable. Thus, the goal of this study is …

Limitation of motion following ACL reconstruction is a well-recognized and disturbing
complication. The pur poses of this study were to identify and characterize those patients …

Study design V. Case–control studies | Evidence-Based Dentistry Skip to main content Thank
you for visiting nature.com. You are using a browser version with limited support for CSS. To …

As former editor-in-chief Bruce P. Squires1 wrote in a previous article, letters to the editor
fulfil 2 functions. First, they open up the pages to the readers. The letters column is where the …

La investigación biomédica es extremadamente importante debido a que sus resultados
pueden influir en el tratamiento y la prevención de las enfermedades, posiblemente a …

Editors continue to depend on the knowledge and expertise of reviewers, who are able to
evaluate manu-scripts in light of current knowledgeand research issues. Reviewers help …

A s we pointed out in our last editorial'the case subjects in a case-control study have the
clinical problem of interest at the start of the study. In cohort studies allsubjects are free of the …

204 NEWSBRIEFS* EN BREF Doctors in Northwest Territories apply for divisional status in
CMA; Beer sales on way down, Canadian brewers report; AIDS threat leads to changes in …

D. JOSÉ ANTONIO CASTILLA ALCALÁ, DOCTOR EN MEDICINA Y CIRUGÍA DE LA
UNIVERSIDAD DE GRANADA, FACULTATIVO ESPECIALISTA DE ÁREA DE LA UNIDAD …