TY  - RPRT
TI  - [Decrease in occurrence of Down's syndrome in Denmark 1980-1982. The effect of prenatal diagnosis].
AU  - B Pilgaard
AU  - M Mikkelsen
PY  - 1985
UR  - https://pubmed.ncbi.nlm.nih.gov/3156440/
ID  - 3156440
ER  -