Study	Reason for exclusion
Agosti 2003	Not an RCT
Corvaglia 2013	Cross‐over RCT with cross‐over at each enteral feed
Logarajaha 2015	Cross‐over RCT with cross‐over at 24 hours
Mihatsch 1999	Cross‐over RCT with initial formula allocation for 5 days only
Mihatsch 2001a	Cross‐over RCT with initial formula allocation for 5 days only
Rigo 1994	5‐Arm RCT with term infants receiving different types of hydrolysed formula (3 different whey hydrolysate formulas, a soy‐collagen hydrolysate formula, or a whey‐casein hydrolysate formula)
Rigo 1995	Not an RCT
Yu 2014	Cross‐over study with initial formula allocation for 10 days, and cross‐over occurring only if feeds not well tolerated Unclear whether randomised

RCT: randomised controlled trial.