BackgroundRandomised trials conducted from 2006 to 2021 indicated that vitamin D supplementation (VDS) was able to prevent severe COVID-19 and acute respiratory infections (ARI). However. larger randomised trials published in 2022 did not confirm the health benefits of VDS in COVID-19 patients. ObjectiveTo examine through a systematic review with meta-analysis the characteristics of r... https://www.mojozers.shop/product-category/cock-rings/