Madigan, Kevin and Brennan, Daria and Lawlor, Elizabeth and Turner, Niall and Kinsella, Anthony and O'Connor, John J and Russel, Vincent and Waddington, John L and O'Callaghan, Eadbhard (2013) A multi-center, randomized controlled trial of a group psychological intervention for psychosis with comorbid cannabis dependence over the early course of illness. Schizophrenia Research , 143 , pp. 138-142.