Structure and stability of symptoms in first episode psychosis: a longitudinal network approach oleh Siân Lowri Griffiths, Samuel P. Leighton, Pavan Kumar Mallikarjun, Georgina Blake, Linda Everard, Peter B. Jones, David Fowler, Joanne Hodgekins, Tim Amos, Nick Freemantle, Vimal Sharma, Max Marshall, Paul McCrone, Swaran P. Singh, Max Birchwood, Rachel Upthegrove