Measurements
BLOOD
All measurements were done in fasting blood samples. Blood hemoglobin concentrations, MCH, MCV, MCHC, % HYPO-He and RET-He were measured at every visit on Sysmex XN-1000™ Hematology Analyzer (Sysmex Corporation, Kobe, Japan). These measurements were done within 4 h of sample collection. % TSAT concentrations were calculated from serum iron