Table 3. Emergency Cervical Cerclage and Prolongation of the Pregnancy: Comparison With Other Studies in Literature .

Authors	Year	Cases	PP
Daskalakis et al [15]	2006	29	61.6
Ochi et al [23]	1994	18	35.2
Artmann et al [24]	2001	19	66.0
Ishikawa et al [25]	2003	10	23.9
Althuisius et al [26]	2003	13	54.0
Makino et al [27]	2004	8	32.9
Our case series	2014	12	89.9

PP: prolongation of the pregnancy (days).