1- The primary and 2nd secondary objectives are those of a clinical trial, and not an animal study. Please revise the primary objective of the study.
2- Parts of the methodology are written in the past tense, why?
3- What are the pathological markers of Parkinsons in the brain and blood that can provide a meaningful distinction among the different groups and indicate success?
4- What is the justification of the sample size?
5- If there is no pain from the procedures, why are there analgesics used?