Fig. 1

Visit schedule of StimTox-CD: SCR = screening visit, EVA = evaluation visit, DBS = DBS surgery, RAN = randomization visit, FU = follow-up visit, icon “syringe” ≙ BoNT or placebo injection, icon “reflex hammer” ≙ clinical assessment, icon “operating room” ≙ DBS surgery, icon “lightning” ≙ DBS setting/sham stimulation