title: Cancer in adult same-sexed twins: a historical cohort study.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D002648:Child; D002675:Child, Preschool; D004198:Disease Susceptibility; D004200:Diseases in Twins; D005260:Female; D005387:Finland; D006801:Humans; D008297:Male; D008875:Middle Aged; D009369:Neoplasms / Q000453:epidemiology* / Q000401:mortality; D012042:Registries; D012737:Sex Factors