Severe periconceptional life events and the sex ratio in offspring: follow up study based on five national registers.
Hansen
D
D
John F Kennedy Institute, Gl Landevej 7, 2600 Glostrup, Denmark. d209325@inet.uni2.dk
Moller
H
H
Olsen
J
J
D015331:Cohort Studies; D003718:Denmark / Q000453:epidemiology; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008016:Life Change Events; D018811:Maternal Exposure; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D012042:Registries; D012744:Sex Ratio