Letter: The anion gap.
D000838:Anions; D001782:Blood Donors; D001786:Blood Glucose / Q000032:analysis; D001803:Blood Transfusion; D004573:Electrolytes / Q000097:blood*; D006801:Humans; D014508:Urea / Q000097:blood
D000838:Anions; D001786:Blood Glucose; D004573:Electrolytes; D014508:Urea