Spinal muscular atrophy (SMA) is an autosomal recessive motor neuron disease with a high incidence and is the most common genetic cause of infant mortality. SMA is primarily characterized by degeneration of the spinal motor neurons that leads to skeletal muscle atrophy followed by symmetric limb paralysis. respiratory failure. and death. https://www.diegojavierfares.com/super-find-5318008-Calculator-Kid-s-Onesie-top-grab/