{Reference Type}: Letter {Title}: Response to letter to editor 'comment on: Safinamide as adjunctive therapy for Parkinson's disease: A promising option with room for improvement'. {Author}: Nishikawa N;Ishida T;Hatano T;Hattori N; {Journal}: J Neurol Sci {Volume}: 462 {Issue}: 0 {Year}: 2024 Jul 15 {Factor}: 4.553 {DOI}: 10.1016/j.jns.2024.123101