@misc{indiciae164ed2c6f851, title = {Decrease in gamma-glutamyltransferase activity in early amniotic fluid in fetal trisomy 18 syndrome.}, author = {M T Mulcahy and M Dick}, year = {1983}, doi = {10.1136/bmj.286.6359.144-c}, url = {https://pubmed.ncbi.nlm.nih.gov/6129915/}, note = {Source identifier: 6129915} }