TY  - RPRT
TI  - Pica: sorting it out.
AU  - J S Boyle
AU  - M C Mackey
PY  - 1999
DO  - 10.1177/104365969901000116
UR  - https://pubmed.ncbi.nlm.nih.gov/10476154/
ID  - 10476154
ER  -