Identifying depression subtypes and investigating their consistency and transitions in a 1-year cohort analysis - Carolin Oetzmann; Nicholas Cummins; Femke Lamers; Faith Matcham; Sara Siddi; Katie M. White; Josep Maria Haro; Srinivasan Vairavan; Brenda W. J. H. Penninx; Vaibhav A. Narayan; Matthew Hotopf; Ewan Carr (PLoS ONE)