Safety and efficacy of the ChAdOx1 nCoV-19 vaccine (AZD1222) against SARS-CoV-2: an interim analysis of four randomised controlled trials in Brazil, South Africa, and the UK
Cancelled operations: a 7-day cohort study of planned adult inpatient surgery in 245 UK National Health Service hospitals
The surgical safety checklist and patient outcomes after surgery: a prospective observational cohort study, systematic review and meta-analysis
Design and preliminary experimental results for a high-frequency crossed electrode phased array, based on a reconfigurable Fresnel lens.
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