title: [When you cross your hands, which of the thumbs is on the top?].
authors.affiliation: pertti.mustajoki@pine.pp.fi
authors.forename: Pertti
authors.initials: P
authors.lastname: Mustajoki
authors.forename: Sami
authors.initials: S
authors.lastname: Mustajoki
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D005190:Family; D005260:Female; D007839:Functional Laterality; D006801:Humans; D008297:Male; D008875:Middle Aged; D010375:Pedigree; D011795:Surveys and Questionnaires; D014925:Wit and Humor as Topic