title: Serum gonadotropin concentrations during the first four years of life.
mesh_terms: D002675:Child, Preschool; D005260:Female; D005640:Follicle Stimulating Hormone / Q000097:blood*; D006801:Humans; D007223:Infant; D007986:Luteinizing Hormone / Q000097:blood*; D008297:Male; D012737:Sex Factors
chemical_list: D007986:Luteinizing Hormone; D005640:Follicle Stimulating Hormone