共 50 条
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- [5] LECITHIN-SPHINGOMYELIN (L/S) RATIO IN TWIN PREGNANCIES BRITISH JOURNAL OF OBSTETRICS AND GYNAECOLOGY, 1976, 83 (06): : 447 - 451
- [8] GLUCOCORTICOIDS AND LECITHIN-SPHINGOMYELIN RATIO WESTERN JOURNAL OF MEDICINE, 1983, 139 (04): : 520 - 521