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Stubborn Brown Spots that refuse to lighten often indicate intrinsic stains, which develop within the tooth and are resistant to ordinary pastes

The company hired public-relations expert Edward Bernays (the nephew of Sigmund Freud) to help stage a protest at the 1929 Easter Day Parade in New York City

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Screening for HHT: If a family history of pulmonary, hepatic, or cerebral arteriovenous malformations exists, screening at puberty and at the end of adolescence with pulmonary CT, hepatic CT, and cerebral MRI is recommended