TY  - GEN
AU  - Lammer,E
TI  - Are vitamin A supplements needed during pregnancy?
SN  - 0093-0415
PY  - 1990///0404
KW  - Female
KW  - Humans
KW  - Pregnancy
KW  - metabolism
KW  - Vitamin A
KW  - administration & dosage
N1  - Publication Type: Editorial
ER  -