Figure 1From: Genetic variance in Nitric Oxide Synthase and Endothelin Genes among children with and without Endothelial DysfunctionSchematic diagram illustrating the recruitment process. Children were matched for age, gender and ethnicity. Children were excluded from the study, if they had any chronic medical conditions such as known genetic syndromes, severe asthma or allergies, or if they were on any chronic medications.Back to article page