Treatment of chronically depressed patients: A multisite randomized controlled trial testing the effectiveness of 'Cognitive Behavioral Analysis System of Psychotherapy' (CBASP) for chronic depressions versus usual secondary care
Jenneke E Wiersma*, Digna JF van Schaik, Patricia van Oppen, James P McCullough, Robert A Schoevers, Jack J Dekker, Marc BJ Blom, Kristel Maas, Johannes H Smit, Brenda WJH Penninx and Aartjan TF Beekman