BUENOS AIRES, ARGENTINA – Mauro Sorbellini, 41, pushes himself in his wheelchair while his wife walks by his side, resting a hand on his shoulder. It is a common scene of a common couple that have just finished dropping their son off at school, except for one detail. Sorbellini, who has spent more than 20 years in a wheelchair after he fell out of a tree and became paralyzed, must fight every day to complete routine tasks like this.