title: Football position and atopy--both subject to the birth order effect?
authors.affiliation: Department of Child Health, St George's Hospital Medical School, London SW17 0RE. m.perkin@sghms.ac.uk
authors.forename: Michael R
authors.initials: MR
authors.lastname: Perkin
mesh_terms: D001722:Birth Order; D005191:Family Characteristics; D006801:Humans; D016017:Odds Ratio; D012737:Sex Factors; D012916:Soccer; D014925:Wit and Humor as Topic