Comprehensive Scientific Literature Review

I'm looking for a thorough literature review on the significance of concussions. The review should identify gaps in current research, summarize existing knowledge, and compare different studies. The introduction needs to talk about the significance, for example the prevalence, incidence, costs... (Budget: $30 - $250 USD, Jobs: Academic Writing, Content Writing, Data Analysis, Editing, Medical Writing, Report Writing, Research Writing, Scientific Research, Writing)