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Brenda Eduardo Torres, 32 (L) and Alfredo Ivan Torres Gil, 18 (R), pictured at their home in Mexico City, Mexico on February 16, 2017. Brenda & Alfredo are two of five siblings, three of whom have been diagnosed with Morquio syndrome. Morquio syndrome is a rare inherited birth defect that is estimated to occur in one of every 200,000 births. The disease may not be visible at birth; symptoms usually begin between ages 1 and 3. Morquio syndrome is a progressive disease, meaning symptoms get worse as a child grows. Photo credit: Bénédicte Desrus