Database/ Resource	Strategy
ClinicalTrials.gov	[Advanced search] CONDITION OR DISEASE: sickle cell OTHER TERMS: antioxidant OR oxidative OR vitamin e OR vitamin C OR vitamin a OR ascorbic acid OR zinc OR Glutamine OR glutathione OR Retinoid OR Selenium OR Micronutrients OR Beta‐carotene OR Edetate sodium OR EDTA STUDY TYPE: Interventional Studies (Clinical Trials)
WHO ICTRP	[Advanced Search] CONDITION: sickle cell INTERVENTION: antioxidant OR oxidative OR vitamin e OR vitamin C OR vitamin a OR ascorbic acid OR zinc OR Glutamine OR glutathione OR Retinoid OR Selenium OR Micronutrients OR Beta‐carotene OR Edetate sodium OR EDTA RECRUITMENT STATUS: All