Menárguez, Micaelá, et al. “The Biology of the Cervix: Biophysical and Biochemical Aspects A General Review”. Quarterly Journal Fides Et Ratio, vol. 35, no. 3, Sept. 2018, pp. 139-51, https://fidesetratio.com.pl/ojs/index.php/FetR/article/view/536.