Dr. Jack Sobel, professor of medicine and chief of infectious diseases at Wayne State's School of Medicine, is referenced in an opinion piece supporting the vaccination of preteen girls with Gardisil. The vaccination provides protection against the strains of human papillomavirus (HPV) that cause 99 percent of cervical cancer cases. Cervical cancer is the fifth most common cancer among U.S. women aged 35 to 54. Sobel recently stated: \"It is beyond belief that there has been public opposition to, and protesting against, a vaccine that will save lives. The concern of increased promiscuity is incomprehensible.\"