TY  - RPRT
TI  - Ethnic differences in preterm and very preterm delivery.
AU  - P H Shiono
AU  - M A Klebanoff
PY  - 1986
DO  - 10.2105/ajph.76.11.1317
UR  - https://pubmed.ncbi.nlm.nih.gov/3766827/
ID  - 3766827
ER  -