Letter: Selecting the sex of one's children.
D000028:Abortion, Induced; D001291:Attitude of Health Personnel; D004992:Ethics, Medical; D005193:Family Planning Services; D005260:Female; D006801:Humans; D008297:Male; D009014:Morals; D011247:Pregnancy; D011296:Prenatal Diagnosis; D012732:Sex Determination Analysis; D012744:Sex Ratio