Letter from Dr Chaand Nagpaul CBE (BMA Council Chair), Professor Jonathan Wyllie (RCUK President), Dame Donna Kinnair (RCN Chief Executive & General Secretary) and Dr Claudia Paoloni (HCSA President) to Duncan Selbie (Chief Executive, Public Health England), regarding cardiopulmonary resuscitation and aerosol generation, dated 23/04/2020.