TY  - RPRT
TI  - The single umbilical artery.
AU  - J J Cogswell
PY  - 1974
DO  - 10.1111/j.1469-8749.1974.tb02716.x
UR  - https://pubmed.ncbi.nlm.nih.gov/4855930/
ID  - 4855930
ER  -