 Control Group Placebo will be in the form of normal saline administered over same time period as equivalent Ferinject administration. IV drip infusion or undiluted bolus injection with a minimum administration time of 15 minutes 200mL as infusion or 20mL as bolus injection for body weight 50 Kg or 6 minutes 100mL normal as infusion or 10mL as bolus injection for body weight 50 Kg. 