Medial prefrontal gray matter volume reductions in users of amphetamine-type stimulants revealed by combined tract-based spatial statistics and voxel-based morphometry. - Jörg Daumann; Philip Koester; Benjamin Becker; Daniel Wagner; Davide Imperati; Euphrosyne Gouzoulis-Mayfrank; Marc Tittgemeyer (NeuroImage, 2011)