Pericardial fat and cardiovascular diseases: A systematic review and meta-analysis.

Objective: Previous studies investigated the effect of pericardial fat on cardiovascular diseases. However, until now there was no systematic review and meta-analysis investigated this association, thus we conducted this article to assess the relationship between pericardial fat and cardiovascular diseases.

Methods: We searched PubMed, The Cochrane Library, Scopus, Google Scholar and Clinicaltrials.

The delaying of elective surgeries after COVID-19 infection decreases postoperative complications.

Background: Huge controversy surrounds delaying elective surgeries after COVID-19 infection. Although two studies evaluated the issue, several gaps still exist.

Methods: A propensity score matched retrospective single center cohort design was used to evaluate the optimum time of delaying elective surgeries after COVID-19 infection and the validity of the current ASA guidelines in this regard.

Quality of Distance Learning After One and a Half Year From Its Integration Due to the COVID-19 Pandemic: A Cross-Sectional Study at the University of Jordan.

Background The coronavirus disease 2019 (COVID-19) pandemic mandated the change from face-to-face learning to distance learning. As a result, the quality of distance learning worldwide is questionable. Objectives and aims The aim of this study is to investigate the quality of distance learning among university students at the University of Jordan, as well as its determinants and obstacles.

Efficacy and safety of COVID-19 vaccines: A network meta-analysis.

Objective: Several vaccines showed a good safety profile and significant efficacy against COVID-19. Moreover, in the absence of direct head to head comparison between COVID-19 vaccines, a network meta-analysis that indirectly compares between them is needed.

Methods: Databases PubMed, CENTRAL, medRxiv, and clinicaltrials.