| http://www.w3.org/ns/prov#value | - Oral lichen planus is a relatively common dermatological disease, the prevalence of which is estimated at 1-2% of the population. 17 Its etiology remains unknown; however, it is believed that factors such as stress, the ingestion of acidic food and seasonings, systemic diseases including hepatitis C infection 9 and excessive alcohol intake and tobacco consumption are associated with periods of exa
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