Mamonov 2000.

Methods	Prospective randomised trial conducted in the Ukraine Timing: not stated
Participants	128 women with clomiphene‐resistant PCOS. 84% were obese
Interventions	Metrodin High Purity for up to 6 cycles (n = 62), versus Laparoscopic electrocoagulation of the ovarian surface (n = 66). Follow‐up for 1½ years
Outcomes	Pregnancy, miscarriage
Notes	Conflict of interest: not stated
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	Quote: "..were randomized.." Comment: no other details in abstract
Allocation concealment (selection bias)	Unclear risk	No details in abstract
Blinding of participants and personnel (performance bias) All outcomes	High risk	No evidence of blinding of researchers or participants
Blinding of outcome assessment (detection bias) All outcomes	Unclear risk	No details
Incomplete outcome data (attrition bias) All outcomes	Unclear risk	Unclear details
Selective reporting (reporting bias)	High risk	No outcomes were listed in the Methods section. Study only available in abstract form
Other bias	High risk	Conference abstract only