id	keyword
american_scientific_journal-4621	bone
american_scientific_journal-4621	reconstruction
american_scientific_journal-4621	ameloblastoma
american_scientific_journal-4621	graft
american_scientific_journal-4621	nvfg
american_scientific_journal-4621	non
american_scientific_journal-4621	tumour
american_scientific_journal-4621	resection