@article{yung_nelson_2011,  title={Young people at ultra high risk for psychosis: research from the PACE clinic},  volume={33},  ISSN={1516-4446},  url={https://doi.org/10.1590/S1516-44462011000600003},  DOI={10.1590/S1516-44462011000600003},  journal={Brazilian Journal of Psychiatry},  publisher={Associação Brasileira de Psiquiatria},  author={Yung, Alison R. and Nelson, Barnaby},  year={2011},  month={Oct},  pages={s143–s160} }