共 6 条
[1]
AUBRY RH, 1976, OBSTET GYNECOL, V47, P21
[3]
GOLDKRAND JW, 1979, OBSTET GYNECOL, V53, P348
[4]
MORRISON JC, 1977, AM J OBSTET GYNECOL, V127, P363
[5]
SPELLACY WN, 1972, OBSTET GYNECOL, V39, P852
[6]
AMNIOTIC-FLUID LECITHIN - SPHINGOMYELIN RATIO AND FETAL LUNG DEVELOPMENT
[J].
BMJ-BRITISH MEDICAL JOURNAL,
1972, 2 (5805)
:85-+