title: Sex ratio in erythema nodosum.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D002648:Child; D002675:Child, Preschool; D004893:Erythema Nodosum / Q000453:epidemiology* / Q000276:immunology; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D009664:Norway; D012737:Sex Factors