%0 Journal Article %T Dysphagia is associated with presynaptic dopaminergic dysfunction and greater non-motor symptom burden in early drug-na£¿ve Parkinson¡¯s patients %A Flavia Niccolini %A Gennaro Pagano %A Georgios Dervenoulas %A Marios Politis %A Sotirios Polychronis %A Tayyabah Yousaf %J Archive of "PLoS ONE". %D 2019 %R 10.1371/journal.pone.0214352 %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6657830/