[Headache (2): chronic headache in children].
D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D002908:Chronic Disease; D005260:Female; D006261:Headache; D006801:Humans; D007223:Infant; D008297:Male; D008881:Migraine Disorders; D012737:Sex Factors
Huvudvärk (2): kronisk huvudvärk hos barn.