Search terms

A. nutrition$ or nutritive or diet or diet therapy or (energy and intake) or dietary service$ or dietary or eating or food or feeding or feeding behaviour or feeding behavior or food habit$ or diet advice or dietary advice or dietetics or dietician$ or caloric intake or calorie intake or (dietary and supplement$) or (formula$ and food) or food supplements or elemental).af or dh.fs

B. weight gain or (weight adj5 gain) or nutrition$ status or (nutrition$ adj5 status) or ((improv$ or gain$ or increase$) adj5 (weight or intake)).af

C. (random$ or rct$ or double blind or single blind or treble blind or triple blind or (control$ and trual$) or (clinical adj5 trial$) or trial or trials or systematic$ review$ or metaanal$ or meta‐analys$).af

((A.ti and B) or (A and B.ti)) and C