Grass-roots junior doctor communication network in response to the COVID-19 pandemic: a service evaluation oleh Nisha Patel, Ara Darzi, Ruth Brown, Georgina Phillips, James Kinross, Georgina Russell, Geiske Zijlstra, Arun Sivananthan, Matthew Machin, Alexander Harris, Shiva T Radhakrishnan, Peter Crook, Max Christopher Denning