Table 4.

Shows the study demographics data

Study	Year	Country	Study design	Sample size	Mean age, years	Male:female	Mean Follow-up, months
Lococo et al. [24]	2013	Italy	Retrospective cohort	71	60.2	23:48	59.32
Abat et al. [26]	2012	Spain	Retrospective cohort	37	57	22:15	84
Hammoumi et al. [25]	2014	Morocco	Retrospective cohort	76	49	22:54	-
Deveci et al. [27]	2017	Turkey	Retrospective cohort	51	55.3	6:45	26.9
Bartocci et al. [1]	2017	Italy	Retrospective cohort	82	60	27:55	64.7