Eslamian 2013.

Methods	Randomised controlled triple‐blinded trial Duration of study: 12 weeks
Participants	Country: Iran Population: asthenozoospermic infertile men, N = 50 Mean age: unclear Inclusion criteria: patients interest in contribution aged 20‐45 who have passed at least one year from the date they have decided to have a baby, not to using pregnancy protection methods, affected by idiopathic asthenozoospermia based on WHO criteria, normal serum gonadotropin, testosterone and prolactin values Exclusion criteria: affected by genital system infection or taking drug for the infection during past three months, affected by anatomical anomalies in genital system such as varicocoele, surgical history on testicles and vasdeferane
Interventions	Docosahexaenoic acid (DHA) 465 mg + vitamin E 600 IU (n = 25) versus Placebo (n = 25) Duration of treatment: 12 weeks
Outcomes	Sperm parameters, serum fatty acid concentration and sperm membrane fatty acid concentration
Notes	In Arabic, translated. Tried multiple times to contact authors for further study details with no response. Last tried to contact Feburary 2014: janati@avicenna.ac.ir
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Low risk	Stratified blocked randomisation
Allocation concealment (selection bias)	Low risk	Cans containing capsules marked as A1, A2, B1, B2 and patients, researchers and physician were unaware of the types of drugs
Blinding of participants and personnel (performance bias) All outcomes	Low risk	Quote: "Cans containing capsules marked as A1, A2, B1, B2 and patients, researchers and physician were unaware of the types of drugs"
Blinding of outcome assessment (detection bias) All outcomes	Low risk	Quote: "Triple‐blinded" "Cans containing capsules marked as A1, A2, B1, B2 and patients, researchers and physician were unaware of the types of drugs"
Incomplete outcome data (attrition bias) All outcomes	Low risk	Withdrawals and exclusions: Intervention group (3 withdrawals): one man could not refer to the clinic in sixth week, the wife of the other one got pregnant, and another one was excluded because he have not taken more than 10% of the capsules Control group (6 withdrawals): two men could not refer to the clinic in sixth week, one man could not refer to the clinic in 12th week. One man used complementary Coenzyme Q10, and another one was excluded because he have not taken more than 10% of the capsules
Selective reporting (reporting bias)	Unclear risk	Sperm parameters reported. No protocol available.