title: Distribution of the E1 gene among Norwegian blood donors studied by an automated screening method.
mesh_terms: D001782:Blood Donors; D002802:Cholinesterases / Q000235:genetics*; D005787:Gene Frequency; D006580:Genetic Carrier Screening / Q000379:methods; D006801:Humans; D009664:Norway
chemical_list: D002802:Cholinesterases