Table A1.

Involved studies, their design and bias estimation results according Cochrane Collaboration Tool (v.6.0).

Study	Participants Size	Study Design	Level of Evidence	Risk of Bias	Publication Bias
Cong et al., 2017 [17]	33	Cohort	Low	Moderate	Undetected
Bazanella et al., 2017 [18]	106	RCT	High	Low	Strongly suspected (funding from baby food company)
Parra-Llorca et al., 2018 [19]	69	Cohort	Low	Moderate	Undetected
Béghin et al., 2020 [20]	350	RCT	High	Low	Strongly suspected (authors are employees of a baby food company)
Wang et al., 2020 [21]	20	Prospective with two arms	Very low	High (no randomization or blinding reported)	Undetected
Li et al., 2020 [22]	77	Cohort	Low	Moderate	Undetected
Knol et al., 2005 [12]	68	RCT	High	Low	Undetected