[1] Jagiellonian Univ, Coll Med, Dept Hyg & Dietet, Krakow, Poland
[2] Jagiellonian Univ, Coll Med, Dept Hyg & Dietet, Systemat Reviews Unit,Polish Cochrane Branch, Krakow, Poland
[3] Jagiellonian Univ, Coll Med, Polish Cochrane Branch, Systemat Reviews Unit, Krakow, Poland