共 29 条
[3]
MODE OF DELIVERY AND THE LECITHIN-SPHINGOMYELIN RATIO
[J].
BRITISH JOURNAL OF OBSTETRICS AND GYNAECOLOGY,
1979, 86 (12)
:965-968
[8]
FREER DE, 1979, CLIN CHEM, V25, P960
[9]
Gluck L, 1974, Clin Perinatol, V1, P125