“…A total of 14 papers were from Asia, 14,16,19,22–24,26–28,30–32,34,35 and eight from Europe 15,17,18,20,21,25,29,33 . The design of the study included 15 retrospective cohort papers, 14,19,22–25,27–31,33–35 six prospective cohort studies, 15–18,21,26,32 and one case control study 20 . Treatment modalities included exclusively loop electrosurgical excision procedure (LEEP) in 12 studies, 15,17–19,21,22,24,25,27,28,33,35 exclusive hysterectomy in three studies, 23,30,34 and a mixed of LEEP, laser or surgery in the remaining seven reports 14,16,20,26,29,31,32 .…”