TY  - RPRT
TI  - When should schizophrenic and normal groups be compared?
AU  - L J Chapman
AU  - J P Chapman
PY  - 1978
DO  - 10.1016/0022-3956(78)90037-7
UR  - https://pubmed.ncbi.nlm.nih.gov/722636/
ID  - 722636
ER  -