Gunerhan 2009.

Methods	Randomised clinical trial, Turkey
Participants	38 hospitalised adults with gastrointestinal tumours admitted for surgery, at nutritional risk according to the trialist Male:Female = 9:17 Mean age = 62.5 Exclusion criteria: Diabetes mellitus, renal or hepatic failure or both, active infection, a history of immunosuppressive drug use or clinical signs of vitamin or trace element deficiency
Interventions	Experimental group: Standard enteral feeding (without RNA and omega3)(n = 19) Control group: Normal feeding planned by a dietitian(n = 19)
Outcomes	Lymphocyte count, complications, length of hospital stay
Study dates	Not stated
Notes	There was also a 3rd group of immunonutrition, not included in this review. We contacted the authors on 19th August 2015 by email: ygunerhan@gmail.com . We received no reply.
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	Not described
Allocation concealment (selection bias)	Unclear risk	Not described
Blinding of participants and personnel (performance bias) All outcomes	High risk	Not blinded. Only the experimental group received a tube.
Blinding of outcome assessment (detection bias) All outcomes	Unclear risk	Not described
Incomplete outcome data (attrition bias) All outcomes	High risk	Above 5% dropouts and the trial did not allow proper methodology for intention‐to‐treat analysis.
Selective reporting (reporting bias)	Unclear risk	No protocol could be obtained, and the trial did not report all‐cause mortality or serious adverse events.
For‐profit bias	Unclear risk	It was unclear how the trial was funded.
Other bias	Low risk	The trial appeared to be free of other components that could put it at risk of bias.