broken link to missing FDA source reference

[FionaEBI]

The source reference for the FDA document no longer appears to exist under the 'Drug warning information' for the FDA source for withdrawn drug XIMELAGATRAN. See https://www.ebi.ac.uk/chembl/compound_report_card/CHEMBL522038/

http://wayback.archive-it.org/7993/20170113210552/http://www.fda.gov/downloads/AdvisoryCommittees/CommitteesMeetingMaterials/ScienceBoardtotheFoodandDrugAdministration/UCM302647.pdf