Autoimmune "Atypical" Atypical Parkinsonism: Anti‐GABAB Receptor Encephalitis Presenting as a Reversible Mimic of Progressive Supranuclear Palsy. - Mustafa, Farsana; Rajanna, Chaithra; Agarwal, Ayush; Garg, Ajay; Srivastava, Achal Kumar; Mahadevan, Anita; Garg, Divyani (Movement Disorders Clinical Practice, 2025)