TY  - RPRT
TI  - Prolonged pregnancy.
AU  - L LINDGREN
AU  - P NORMANN
AU  - L VIBERG
PY  - 1958
DO  - 10.3109/00016345809160058
UR  - https://pubmed.ncbi.nlm.nih.gov/13605696/
ID  - 13605696
ER  -