TY  - RPRT
TI  - Breech delivery.
AU  - M Helfferich
AU  - J Favier
PY  - 1971
DO  - 10.1016/0002-9378(71)90216-x
UR  - https://pubmed.ncbi.nlm.nih.gov/5573612/
ID  - 5573612
ER  -