共 19 条
- [1] ALEXANDER GR, 1987, AM J PREV MED, V3, P243
- [2] *AM NURS ASS, 1987, ACC PREN CAR KEY PRE
- [4] *CA HLTH WELF AG O, 1986, LEG REP ALT BIRTH ME
- [5] *CHILDR RES I CA S, 1987, BACK BAS IMPR HLTH C
- [7] *HLTH TASK FORC FR, 1979, STAT PER SERV FRESN
- [8] *I MED, 1985, COMM PREV LOW BIRTHW
- [9] *INT FERT RES PROG, 1978, MAT REC
- [10] LEVY B, 1971, AM J OBSTET GYNECOL, V109, P311