TY  - RPRT
TI  - Umbilical circulation--physiology and pathology.
AU  - W Künzel
PY  - 1981
DO  - 10.1515/jpme.1981.9.s1.68
UR  - https://pubmed.ncbi.nlm.nih.gov/7229894/
ID  - 7229894
ER  -