Observations on the results of pregnancies in women resident in Belfast. III. Sex ratio with particular reference to nuclear sexing of chorionic villi of abortions.
D000028:Abortion, Induced / Q000706:statistics & numerical data*; D000022:Abortion, Spontaneous; D002824:Chorionic Villi; D005260:Female; D006801:Humans; D011247:Pregnancy / Q000706:statistics & numerical data; D012723:Sex; D012744:Sex Ratio
ABORTION/statistics; PREGNANCY/statistics; SEX