共 7 条
- [2] CNATTINGIUS S, 1992, Journal of the American Medical Association, V268, P886, DOI 10.1001/jama.268.7.886
- [5] Mosher WD, 1987, AM DEMOGR, V9, P42
- [6] DELAYED CHILDBEARING - ARE THERE ANY RISKS [J]. MEDICAL JOURNAL OF AUSTRALIA, 1994, 160 (09) : 539 - 544