TY  - JOUR
UR  - https://doi.org/10.1515/jpme.1990.18.3.228
TI  - Announcement
T3  - Journal of Perinatal Medicine
PY  - 1990
DO  - doi:10.1515/jpme.1990.18.3.228
VL  - 18
IS  - 3
SP  - 228
EP  - 228
Y2  - 2026-05-01
ER  -