Efficacy and Safety of Transcranial Alternating Current Stimulation Compared to Transcranial Direct Current Stimulation in the Treatment of Psychiatric & Neurological Disorders: A Systematic Review of Head-to-head Trials. - Boopathy, Priyavarshini; Pathak, Harsh; Parlikar, Rujuta; Sreeraj, Vanteemar S.; Kumar, Vijay; Mishra, Biswa Ranjan; Venkatasubramanian, Ganesan (Clinical Psychopharmacology & Neuroscience, 2026)