Oral functions in adult persons with spinal muscular atrophy compared to a healthy control group: a prospective cross-sectional study with a multimodal approach oleh Teresa Kruse, Diana Leflerovà, Annette Cap, Sara Portegys, Brunhilde Wirth, Raoul Heller, Svenja Brakemeier, Tim Hagenacker, Bert Braumann, Gilbert Wunderlich