Jansson , Åsa, Gustafsson , M. and Wilander , E. (1998) “Efficiency of Cytological Screening for Detection of Cervical Squamous Carcinoma: A study in the county of Uppsala 1991–1994”, Upsala Journal of Medical Sciences, 103(2), pp. 147-154. doi: 10.3109/03009739809178947.