Becher N, Adams Waldorf K, Hein M, Uldbjerg N (January 2009). "The cervical mucus plug: structured review of the literature". Acta Obstetricia et Gynecologica Scandinavica. 88 (5): 502–513. doi:10.1080/00016340902852898. PMID19330570. S2CID23738950.
Sakai M, Ishiyama A, Tabata M, Sasaki Y, Yoneda S, Shiozaki A, Saito S (August 2004). "Relationship between cervical mucus interleukin-8 concentrations and vaginal bacteria in pregnancy". American Journal of Reproductive Immunology. 52 (2): 106–112. doi:10.1111/j.1600-0897.2004.00203.x. PMID15274649. S2CID21759935.
Becher N, Adams Waldorf K, Hein M, Uldbjerg N (January 2009). "The cervical mucus plug: structured review of the literature". Acta Obstetricia et Gynecologica Scandinavica. 88 (5): 502–513. doi:10.1080/00016340902852898. PMID19330570. S2CID23738950.
Sakai M, Ishiyama A, Tabata M, Sasaki Y, Yoneda S, Shiozaki A, Saito S (August 2004). "Relationship between cervical mucus interleukin-8 concentrations and vaginal bacteria in pregnancy". American Journal of Reproductive Immunology. 52 (2): 106–112. doi:10.1111/j.1600-0897.2004.00203.x. PMID15274649. S2CID21759935.
Becher N, Adams Waldorf K, Hein M, Uldbjerg N (January 2009). "The cervical mucus plug: structured review of the literature". Acta Obstetricia et Gynecologica Scandinavica. 88 (5): 502–513. doi:10.1080/00016340902852898. PMID19330570. S2CID23738950.
Sakai M, Ishiyama A, Tabata M, Sasaki Y, Yoneda S, Shiozaki A, Saito S (August 2004). "Relationship between cervical mucus interleukin-8 concentrations and vaginal bacteria in pregnancy". American Journal of Reproductive Immunology. 52 (2): 106–112. doi:10.1111/j.1600-0897.2004.00203.x. PMID15274649. S2CID21759935.