TY  - RPRT
TI  - Prolonged pregnancy.
AU  - J F Barrett
AU  - S Tyrrell
AU  - R J Lilford
PY  - 1987
DO  - 10.1136/bmj.294.6563.56-b
UR  - https://pubmed.ncbi.nlm.nih.gov/3101801/
ID  - 3101801
ER  -