title: Largest U.S. travel nurse staffing firms. Ranked by estimated 2012 U.S. temporary staffing revenue ($ in millions).
mesh_terms: D006801:Humans; D009740:Nursing Staff / Q000191:economics / Q000600:supply & distribution*; D020416:Outsourced Services / Q000145:classification / Q000191:economics*; D010561:Personnel Staffing and Scheduling / Q000145:classification / Q000191:economics*; D014481:United States