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3 “.... The US Food and Drug Administration approved the first of the biologics (infliximab) in 1998 and approved...”

4 “.... The US Food and Drug Administration approved the first of the biologics (infliximab) in 1998 and approved...”

5 “... September 2010. For additional data we also hand searched reference lists, US Food and Drug Administration...”

6 “... September 2010. For additional data we also hand searched reference lists, US Food and Drug Administration...”