Barriers to and facilitators of compliance with clinic-based cervical cancer screening: population-based cohort study of women aged 23-60 years., Östensson, Ellinor, Alder Susanna, Elfström K Miriam, Sundström Karin, Zethraeus Niklas, Arbyn M., and Andersson Sonia , PLoS One, 2015, Volume 10, Issue 5, p.e0128270, (2015)