Saha, S.; Welham, J.; Macaulay, C.; El-Saadi, O.; Chant, D. - 2003
There has been a debate on whether or not the incidence of schizophrenia varies across time and place. In order to optimise the evidence upon which this debate is based, we have undertaken a systematicsystematic review of the literature. In this paper we provide an overview of the methods of the...