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[11] ZYGOSITY AND GENETIC ANOMALIES IN TWINS [J]. EUROPEAN JOURNAL OF OBSTETRICS GYNECOLOGY AND REPRODUCTIVE BIOLOGY, 1983, 15 (4-6): : 269 - 272

[12] ELWOOD JM, 1983, LANCET, V1, P470

[13] ELWOOD JM, 1973, BRIT J PREV SOC MED, V27, P236

[14] ERIKSSON A, 1962, ACTA GENET STAT MED, V12, P242

[15] RETROSPECTIVE STUDIES ON TWINNING RATE IN SCANDINAVIA [J]. ACTA GENETICAE MEDICAE ET GEMELLOLOGIAE, 1976, 25 : 29 - 35

[16] ERIKSSON AW, 1973, AM J HUM GENET, V25, P141

[17] CONJOINED TWINNING IN MAMMALIAN TERATOLOGY [J]. ARCHIVES OF ENVIRONMENTAL HEALTH, 1969, 19 (03): : 353 - +

[18] Fleiss JL., 1981, STAT METHODS RATES P, V2

[19] GITTELSOHN AM, 1965, BRIT J PREV SOC MED, V19, P8

[20] GUTTMACHER AF, 1953, OBSTET GYNECOL, V2, P22

[11] ZYGOSITY AND GENETIC ANOMALIES IN TWINS [J]. EUROPEAN JOURNAL OF OBSTETRICS GYNECOLOGY AND REPRODUCTIVE BIOLOGY, 1983, 15 (4-6): : 269 - 272

[12] ELWOOD JM, 1983, LANCET, V1, P470

[13] ELWOOD JM, 1973, BRIT J PREV SOC MED, V27, P236

[14] ERIKSSON A, 1962, ACTA GENET STAT MED, V12, P242

[15] RETROSPECTIVE STUDIES ON TWINNING RATE IN SCANDINAVIA [J]. ACTA GENETICAE MEDICAE ET GEMELLOLOGIAE, 1976, 25 : 29 - 35

[16] ERIKSSON AW, 1973, AM J HUM GENET, V25, P141

[17] CONJOINED TWINNING IN MAMMALIAN TERATOLOGY [J]. ARCHIVES OF ENVIRONMENTAL HEALTH, 1969, 19 (03): : 353 - +

[18] Fleiss JL., 1981, STAT METHODS RATES P, V2

[19] GITTELSOHN AM, 1965, BRIT J PREV SOC MED, V19, P8

[20] GUTTMACHER AF, 1953, OBSTET GYNECOL, V2, P22