TY  - RPRT
TI  - Perinatal mortality and its prophylaxis.
AU  - A YLPPO
PY  - 1959
DO  - 10.1111/j.1651-2227.1959.tb17485.x
UR  - https://pubmed.ncbi.nlm.nih.gov/13846545/
ID  - 13846545
ER  -