TY  - RPRT
TI  - [PERGYN: perinatal-gynecologic information system].
AU  - U Haller
AU  - B Frielingsdorf
AU  - M Litschgi
PY  - 1989
DO  - 10.1007/bf02417708
UR  - https://pubmed.ncbi.nlm.nih.gov/2679416/
ID  - 2679416
ER  -