Meta-analysis Data Verification Needed

I have completed an initial data-extraction run for a meta-analysis that covers 20 published studies and 14 predefined questions per study. Before I proceed to analysis, I want a medically trained eye to double-check every field... (Budget: $10 - $50 USD, Jobs: Data Analysis, Data Extraction, Data Management, Excel, Medical Writing, Qualitative Research, Research, SPSS Statistics, Statistical Analysis, Statistics)