Risk factors for SARS-CoV-2 among patients in the Oxford Royal College of General Practitioners Research and Surveillance Centre primary care network: a cross-sectional study

2020 . de Lusignan, Simon | Dorward, Jienchi | Correa, Ana | Jones, Nicholas | Akinyemi, Oluwafunmi | Amirthalingam, Gayatri | Andrews, Nick | Byford, Rachel | Dabrera, Gavin | Elliot, Alex | Ellis, Joanna | Ferreira, Filipa | Lopez Bernal, Jamie | Okusi, Cecilia | Ramsay, Mary | Sherlock, Julian | Smith, Gillian | Williams, John | Howsam, Gary | Zambon, Maria | Joy, Mark | Hobbs, F D Richard