Background Sarcopenia is defined as the loss of muscle mass and strength. Despite the
seriousness of this disease, a single diagnostic criterion has not yet been established. Few …

This systematic review and meta-analysis evaluated the extent of sleep disturbances during
the COVID-19 pandemic. Eleven databases and six preprint repositories were searched for …

Doing Meta-Analysis with R: A Hands-On Guide serves as an accessible introduction on
how meta-analyses can be conducted in R. Essential steps for meta-analysis are covered …

The methods and results of systematic reviews should be reported in sufficient detail to allow
users to assess the trustworthiness and applicability of the review findings. The Preferred …

As new scientific evidence on health effects of air pollution is generated, air quality
guidelines need to be periodically updated. The objective of this review is to support the …

Objective The coronavirus disease 2019 (COVID‐19) has rapidly developed into a
pandemic. Increased levels of ferritin due to cytokine storm and secondary hemophagocytic …

Background A 2017 meta-analysis of data from 25 randomised controlled trials (RCTs) of
vitamin D supplementation for the prevention of acute respiratory infections (ARIs) revealed …

Background Irritable bowel syndrome (IBS) is one of the most common functional bowel
disorders, but community prevalence appears to vary widely between different countries …

Objective To determine the efficacy and safety of low carbohydrate diets (LCDs) and very
low carbohydrate diets (VLCDs) for people with type 2 diabetes. Design Systematic review …

Background Inflammatory bowel disease (IBD) is a lifelong condition with no cure. Patients
with IBD might experience symptoms of common mental disorders such as anxiety and …