what are the risk factors for the development of cervical dysplasia?
['Human papillomavirus (HPV) infection. The most important risk factor for cervical cancer is infection with HPV. ... ', 'Immune system deficiency. ... ', 'Herpes. ... ', 'Smoking. ... ', 'Age. ... ', 'Socioeconomic factors. ... ', 'Oral contraceptives. ... ', 'Exposure to diethylstilbestrol (DES).']