Glycosylated hemoglobin Wikipedia article "Glycosylated_hemoglobin" glycosylated hemoglobin Glycosylated hemoglobin Glycosylated hemoglobin A1c Glycosylated hemoglobin Hemoglobin A1c; HbA1c Glycosylated hemoglobin A1C Glycosylated hemoglobin HbA1c