UNSAL , A., AYRANCI , U., TOZUN , M., ARSLAN , G. and CALIK , E. 2010. Prevalence of dysmenorrhea and its effect on quality of life among a group of female university students. Upsala Journal of Medical Sciences. 115, 2 (Jan. 2010), 138–145. DOI:https://doi.org/10.3109/03009730903457218.