Aerotek, a clinical/scientific staffing provider headquartered in Hanover, Maryland, was listed as the largest US clinical/scientific temporary staffing firm for 2010 based on 2009 revenue. According to a report by Staffing Industry Analysts, Aerotek alone generated approximately $222 million in clinical/scientific revenue in 2009, more than 15% of the entire estimated $1 billion clinical/scientific segment. Aerotek operates more than 200 non-franchised offices throughout the US, Canada and Europe.

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