Interpeduncular Angle: A Possible Marker to Differentiate Atypical Parkinsonism from Idiopathic Parkinson's Disease

Shivarthi T, Sriram M, Saraf U, Kannan R, Kannoth S, Sudhakar A, Nambiar V, Gopinath S, Unnikrishnan G, Anandakuttan A.