@misc{indiciae724ba90aa6e2, title = {A chronic psychotic: a longitudinal perspective.}, author = {R I Gracia and J J Levitt and M T Tsuang}, year = {1989}, doi = {10.1080/00332747.1989.11024427}, url = {https://pubmed.ncbi.nlm.nih.gov/2928413/}, note = {Source identifier: 2928413} }