Hamzehgardeshi 2009.

Trial name or title	A randomised placebo‐controlled trial to determine the effect of iron supplementation on hematological indices in pregnant women with haemoglobin ≥13.2 g/dL.
Methods	A randomised, double‐blind, placebo‐controlled trial.
Participants	87 pregnant women 17‐35 years of age, Hb more than or equal to 132 g/L and ferritin ≥ 143 g/L with 13‐18 weeks of gestation, body mass index (BMI) between 19.8 and 26 kg/m2 and singleton pregnancy.
Interventions	Participants will be randomly assigned to 1 of 2 groups: group 1 ferrous sulphate, 150 mg tablet with 50 mg ferrous elemental, daily, from 20th gestational week to the end of pregnancy and group 2 placebo tablets, 1 tablet daily, from 20th gestational week to the end of pregnancy.
Outcomes	Hb, HCT, MCV, MCH, MCHC, and RBCs were measured in 24‐28 and 32‐36 gestational weeks.
Starting date	March 20, 2002.
Contact information	Zeinab Hamzehgardeshi Tarbiat Modarres University, Tehran University of Medical Siences . 00981543246883 hamzeh@razi.ac.ir
Notes	Source of funding: Tarbiat Modarres University.