Stable improvement in hand muscle strength in incomplete spinal cord injury patients by long-term paired associative stimulation—a case series study - Holopainen, Kirsi; Tolmacheva, Aleksandra; Bersch, Ines; Haakana, Piia; Pohjonen, Markus; Kirveskari, Erika; Arokoski, Jari; Shulga, Anastasia (Frontiers in Neurology, 2025)