Riecher-Rössler A, Gschwandtner U, Aston J, Borgwardt S, Drewe M, Fuhr P, Pflüger M, Radü W, Schindler Ch, Stieglitz RD. The Basel early-detection-of-psychosis (FEPSY)-study--design and preliminary results. Acta Psychiatr Scand. 2007 Feb 1 ; 115(2):114-25. Pubmed Abstract