Dutch Organization

Abstract The metaverse is a speculative investment. It is expected to lure online shoppers and social media users into virtual environments, but its success is far from guaranteed. In 2021, Meta Platforms pledged billions to make the metaverse a reality. They founded the Metaverse Standards Forum in 2022, together with Microsoft, NVIDIA, and others. The same year, the French President, Emmanuel Macron, reacted to the dominance of American tech giants. He vowed to support an “European metaverse”.

Von Hippel-Lindau disease is an autosomal dominant, inherited, tumour predisposition syndrome characterised by a variety of benign and malignant lesions. The most important lesions are hemangioblastomas of the retina, cerebellum, brain stem, and spinal cord; endolymphatic sac tumours; pheochromocytomas; epididymal cystadenomas; different pancreatic tumours (including neuroendocrine tumours) and cysts; and clear cell carcinomas and cysts of the kidney.

Peter Bisschof and colleagues published a systematic review and meta-analysis in The Lancet Infectious Diseases regarding the effect of laminar airflow ventilation on surgical site infection (SSI).1 This study was done in the context of guidelines on SSI by WHO2, 3 and was also in line with publications of the same institution.4 We disagree with the conclusion that laminar airflow ventilation should not be used, especially in case of biomaterial implantation, for various reasons.The studies...