1. Current smoking and COVID-19 risk: results from a population symptom app in over 2.4 million people. Issue 7 (5th January 2021) Authors: Hopkinson, Nicholas S; Rossi, Niccolo; El-Sayed_Moustafa, Julia; Laverty, Anthony A; Quint, Jennifer K; Freidin, Maxim; Visconti, Alessia; Murray, Ben; Modat, Marc; Ourselin, Sebastien; Small, Kerrin; Davies, Richard; Wolf, Jonathan; Spector, Tim D; Steves, Claire J; Falchi, Mario Journal: Thorax Issue: Volume 76:Issue 7(2021) Page Start: 714 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗