Accuracy of Magnetic Resonance Parkinsonism Index in Differentiating Progressive Supranuclear Palsy from Parkinson's Disease among South Indian Population: A Retrospective Case Con... oleh Vasanthapriya Janarthanan, Kulasekaran Nadhamuni, Sibhithran Rajakumar, Elamparidhi Padmanaban, Umamageswari Amirthalingam, Yashkumar Achantani