This assignment is a literature review, to gain insight into the topic before starting an audit. I have already completed the background, review question and search methods. I just need a critical literature review (mainly focussing on strengths and weaknesses of the study) . The review should mainly focus on the effectiveness of the chemical lumbar sympathectomy and depending on the paper comparisons can be made to other interventions. I have also added what is expected from this assignment and I have added a proposal document that I completed which may come in handy to read (specifically the advantages and limitations section).