Onabotulinum Toxin A Injections Into the Salivary Glands for Spinal Muscle Atrophy Type I: A Prospective Case Series of 4 Patients

ObjectiveThe aim of the study was to investigate the safety and efficacy of onabotulinum toxin A injection to the salivary glands under ultrasound guidance for the treatment of sialorrhea in patients with spinal muscular atrophy type I.DesignProspective case series with four patients with spinal mus