TY  - RPRT
TI  - Parity specific perinatal mortality. A longitudinal study based on sibships.
AU  - R Skjaerven
AU  - L M Irgens
AU  - R T Lie
AU  - T Bjerkedal
PY  - 1987
DO  - 10.1111/j.1365-3016.1987.tb00107.x
UR  - https://pubmed.ncbi.nlm.nih.gov/3506199/
ID  - 3506199
ER  -