Identification of Parkinson's Disease Through Facial Image Classification: A Systematic Review. - José Nazareno Alves Rodrigues; Rodrigo de Melo Souza Veras; Laurindo S. Britto Neto; Pedro Henrique Ximenes Ramalho Barros; Wilana Da Silva Moura; Kelson James Silva De Almeida; Kelson Rômulo Teixeira Aires (IEEE Access, 2025)