AUTHOR=Brown Jessy , Stegemöller Elizabeth L. TITLE=Therapeutic singing and expiratory muscle strength training in Parkinson's disease: a mixed methods comparison JOURNAL=Frontiers in Rehabilitation Sciences VOLUME=5 YEAR=2024 URL=https://www.frontiersin.org/journals/rehabilitation-sciences/articles/10.3389/fresc.2024.1478490 DOI=10.3389/fresc.2024.1478490 ISSN=2673-6861