TY  - RPRT
TI  - Registry based perinatal research.
AU  - P Bergsjø
AU  - L M Irgens
AU  - R T Lie
PY  - 2000
DO  - 10.1034/j.1600-0412.2000.079006433.x
UR  - https://pubmed.ncbi.nlm.nih.gov/10857865/
ID  - 10857865
ER  -