title: Altitude, latitude and sex ratio at birth in Iran.
authors.forename: M
authors.initials: M
authors.lastname: Masoudi
authors.forename: M
authors.initials: M
authors.lastname: Saadat
mesh_terms: D000531:Altitude; D016009:Chi-Square Distribution; D005260:Female; D005843:Geography; D006801:Humans; D007231:Infant, Newborn; D007492:Iran / Q000453:epidemiology; D016014:Linear Models; D008297:Male; D012744:Sex Ratio