Eligibility criteria
We included all studies that met the following criteria: 1) Patients: women with interstitial (cornual) pregnancy, 2) Intervention: all types of laparoscopic surgeries, 3) Comparator: all types of open surgeries, 4) Outcomes: all reported outcomes especially those regarding bleeding, operation time and hospital stay, and 5) Study design: all interventional and observational studies (Cohort, case-control, cross-sectional, case series and case report). We excluded conference abstracts, non-English studies, reviews, studies that report the effect of only one type of surgery. No restriction on age, place, and publication date.