TY  - RPRT
TI  - Undifferentiated illness.
AU  - J Frith
AU  - S Knowlden
PY  - 1992
DO  - 10.5694/j.1326-5377.1992.tb126474.x
UR  - https://pubmed.ncbi.nlm.nih.gov/1556975/
ID  - 1556975
ER  -