Changes in seasonality of birth rates in Germany from 1951 to 1990.
Lerchl
A
A
Institut für Reproduktionsmedizin der Universität, Münster.
Simoni
M
M
Nieschlag
E
E
D001723:Birth Rate / Q000639:trends; D002648:Child; D003276:Contraceptives, Oral; D005260:Female; D005858:Germany; D006801:Humans; D011247:Pregnancy; D012621:Seasons
D003276:Contraceptives, Oral