Seasonality of birth in children with central nervous system tumours in Denmark, 1970-2003.
We investigated possible seasonal variation of births among children <20 years with a central nervous system tumour in Denmark (N=1640), comparing them with 2,582,714 children born between 1970 and 2003. No such variation was seen overall, but ependymoma showed seasonal variation.
Schmidt
L S
LS
Institute of Cancer Epidemiology, Danish Cancer Society, Strandboulevarden 49, DK-2100 Copenhagen Ø, Denmark. samsoe@cancer.dk
Grell
K
K
Frederiksen
K
K
Johansen
C
C
Schmiegelow
K
K
Schüz
J
J
D000293:Adolescent; D000328:Adult; D016543:Central Nervous System Neoplasms / Q000453:epidemiology*; D002648:Child; D002675:Child, Preschool; D003718:Denmark; D004806:Ependymoma / Q000453:epidemiology; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D012621:Seasons; D013997:Time Factors