- Improvement of sustained attention and visual and movement skills, but not clinical symptoms, after dehydroepiandrosterone augmentation in schizophrenia: a randomized, double-blind, placebo-controlled, crossover trial. Ritsner, M.S., Gibel, A., Ratner, Y., Tsinovoy, G., Strous, R.D. J. Clin. Psychopharmacol (2006)