Letchworth 1980.

Methods	Prospective randomly selected
Participants	200 women in Southampton/UK requesting sterilisation. Women with previous pelvic surgery were excluded from the study.
Interventions	Minilaparotomy versus laparoscopy using modified Hulka Clemens clip.
Outcomes	Difficulties at surgery, duration of operation and hospital stay, analgesia use, post operative pain
Notes	All operations were performed by experienced surgeons (authors only)
Risk of bias
Bias	Authors' judgement	Support for judgement
Allocation concealment?	Unclear risk	B ‐ Unclear