Head and neck cancers are a group of related neoplasms that arise in the oral cavity, pharynx, and larynx. Almost 600000 new cases of head and...

Cigarette smoking has been identified as the second leading risk factor for death from any cause worldwide. In 2000, an estimated 4.83 million...

Hepatitis B and hepatitis C viruses are causes of liver cancer. The former appears to act directly by damaging cells and their DNA. The latter shows...