Ntanasi, E. Maraki, M. Yannakoulia, M. Stamelou, M. Xiromerisiou, G. Kosmidis, M.H. Dardiotis, E. Hadjigeorgiou, G. Sakka, P. Gargalionis, A. Patas, K. Chatzipanagiotou, S. Charisis, S. Stefanis, L. Scarmeas, N., Frailty and Prodromal Parkinson's Disease: Results from the HELIAD Study, Journals of Gerontology Series A: Biological Sciences and Medical Sciences, (76), 622-629, 2021, Oxford University Press, 1079-5006, 1758-535x