Bessa 2008.

Methods	Assignment: sealed envelopes Follow‐up: 6 months
Participants	Grade 3 and 4 hemorrhoids. Exclusion: previous or concomitant anorectal disease, any degree faecal incontinence.
Interventions	Ligasure and conventional open technique (Miligan‐Morgan)
Outcomes	Operating time, pain, incontinence, complications, wound healing, hospital stay, return to work
Notes	MJS 4
Risk of bias
Bias	Authors' judgement	Support for judgement
Allocation concealment (selection bias)	High risk	C ‐ Inadequate