TY  - RPRT
TI  - Decrease in gamma-glutamyl transpeptidase activity in early amniotic fluid in fetal trisomy 18 syndrome.
AU  - H Janlanko
AU  - P Aula
PY  - 1982
DO  - 10.1136/bmj.284.6329.1593
UR  - https://pubmed.ncbi.nlm.nih.gov/6123360/
ID  - 6123360
ER  -