Dysbiosis of the beneficial gut bacteria in patients with Parkinson's disease from India. - Pavan, Sujith; Gorthi, Sankar; Prabhu, Arvind; Das, Bhabatosh; Mutreja, Ankur; Vasudevan, Karthick; Shetty, Vignesh; Ramamurthy, Thandavarayan; Ballal, Mamatha (Annals of Indian Academy of Neurology, 2023)