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The covid-19 pandemic has encouraged more people to make advance treatment decisions relating to CPR and ventilation, reports Clare Wilson. © 2020.As countries look to ease restrictions and manage second waves of cases, apps are appealing but fraught with issues, reports Adam Vaughan. © 2020.From lifestyle to immune system differences, there are a number of reasons why men may be more affected by covid-19, reports Graham Lawton. © 2020.Key scientific data and advice to the UK government won't be published until the coronavirus pandemic ends, reports David A