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Table 1 Electronic database search strategy (August 2017)

From: Evidence of past dental visits and incidence of head and neck cancers: a systematic review and meta-analysis

PubMed
# 1: Head and neck cancers [MH] OR head and neck neoplasms [tiab] OR oral cancers [MH] OR upper aerodigestive tract cancers [MH] OR cancer of tongue [tiab] OR cancer of oropharynx [tiab] OR cancer of hypopharynx [tiab]
# 2: Dental visits [MH] OR visits the dentist [tiab] OR dental check-ups [tiab] OR dental examination [tiab] OR dental treatment [tiab] OR dental care [tiab] OR oral hygiene [tiab] OR periodontitis [tiab]
#1 and #2