TY  - RPRT
TI  - Persistent occiput posterior presentation--a clinical problem.
AU  - M Gardberg
AU  - M Tuppurainen
PY  - 1994
DO  - 10.3109/00016349409013392
UR  - https://pubmed.ncbi.nlm.nih.gov/8304024/
ID  - 8304024
ER  -