title: [Letter: Excess of male conceptuses. The overmortality of male embryos: myth or reality?].
mesh_terms: D000022:Abortion, Spontaneous / Q000453:epidemiology; D003951:Diagnostic Errors; D005260:Female; D005313:Fetal Death / Q000453:epidemiology*; D006801:Humans; D007621:Karyotyping; D008297:Male; D011247:Pregnancy; D012728:Sex Chromatin; D012744:Sex Ratio
vernacular_title: L'excès de conceptus mâles. La surmortalité des embryons mâles: réalités ou mythe