Predictors and outcomes in primary depression care (POKAL) – a research training group develops an innovative approach to collaborative care oleh J Gensichen, K Lukaschek, C Jung-Sievers, P Falkai, A Schmitt, P Henningsen, T Dreischulte, G Pitschel-Walz, H Krcmar, M Böhm, B Prommegger, K Linde, A Drescher, P Schönweger, C Haas, C Brand, P Younesi, J Vukas, V Brisnik, H Schillok, J Raub, L Kaupe, K Biersack, F Gökce, J Eder, L Hattenkofer, Ph Reindl-Spanner, V von Schrottenberg, C Teusen, Ph Sterner, M Bühner, A Schneider, for the POKAL group