Fig. 5From: Evidence of past dental visits and incidence of head and neck cancers: a systematic review and meta-analysisa Funnel plot of standard error by Log odds ratio for all HNCs/UADTCs case-control studies. b Funnel plot of standard error by log odds ratio for all OCs case-control studies. c Funnel plot of standard error by log odds ratio for all HNCs/UADTCs studies grouped by frequency of dental visitsBack to article page