共 50 条
- [1] GLUCOCORTICOIDS AND LECITHIN-SPHINGOMYELIN RATIO WESTERN JOURNAL OF MEDICINE, 1983, 139 (04): : 520 - 521
- [6] SITE OF AMNIOCENTESIS AND LECITHIN-SPHINGOMYELIN RATIO OBSTETRICS AND GYNECOLOGY, 1978, 52 (05): : 552 - 554
- [7] MODE OF DELIVERY AND THE LECITHIN-SPHINGOMYELIN RATIO BRITISH JOURNAL OF OBSTETRICS AND GYNAECOLOGY, 1979, 86 (12): : 965 - 968