Anyone who smokes, uses chewing tobacco, drinks alcohol or has risk factors for oral HPV infection is invited to make an appointment for a free oral cancer screening at NorthShore Evanston Hospital Kellogg Cancer Center, 2850 Ridge Ave. between 9 and 11 a.m. on April 12.  Screenings are available by appointment only.  Registration for an oral cancer screening is available online at or by calling 847-570-5020.