共 19 条
- [1] Beolchini P E, 1965, Minerva Ginecol, V17, P928
- [3] CZEIZEL A, 1970, BRIT J PREV SOC MED, V24, P205
- [4] FREZAL J, 1964, AM J HUM GENET, V16, P336
- [5] GRANROTH G, 1977, BRIT J PREV SOC MED, V31, P164
- [6] HEWITT D, 1971, BRIT J PREV SOC MED, V25, P174
- [7] LAWRENCE KM, 1968, BR J PREV SOC MED, V22, P212
- [9] LECK I, 1966, BRIT J PREV SOC MED, V20, P67
- [10] OVERBEKE J, 1971, ANENCEPHALIE NEDERLA