Référence: da Fonseca EB, Bittar RE, Carvalho MHB, Zugaib M: Pro phy lac tic ad min is tra tion of proges t er one by
vaginal sup pos i to ry to reduce the incidence of spon ta ne ous preterm birth in women at in creased risk: A
ran dom ized placebo-con trolled – blind study. Am J Obstet Gynec 188:419-424, 2003.