Transcranial Direct Current Stimulation in Parkinson's Disease Patients in the Off State: A Randomized Controlled Crossover Trial Examining the Effects on Pain With and Without the Influence of Dopaminergic Medication - González-Zamorano, Y; Moreno-Verdú, M; Martínez-Benito, A; Fernández-Carnero, J; Romero, JP (Pain Practice, 2025)