Table 1.

Quality assessment of included publications.

Study	Selection				Comparability	Outcome			Score
	Representativeness of exposed cohort	Selection of non-exposed cohort	Ascertainment of exposure	Demonstration that outcome of interest was not present at start of study	Control for age and sex	Assessment of outcome	Follow-up	Adequacy of follow-up
Uncontrolled observational studies
Mazza et al. (2021)	b*	N/A	a*	b	N/A	a*	a*	b*	5
Rass et al. (2021)	a*	N/A	a*	b	N/A	b*	a*	c	4
González et al. (2021)	a*	N/A	a*	b	N/A	b*	a*	b*	5
Morin et al. (2021)	b*	N/A	b	b	N/A	b*	a*	b*	4
van den Borst et al. (2020)	a*	N/A	b	b	N/A	b*	a*	a*	4
Daher et al. (2021)	b*	N/A	a*	b	N/A	b*	a*	a*	5
Prospective cohort studies
Frontera et al. (2021)	a*	a*	a*	b	a*	b*	a*	c	6
Mattioli et al. (2021)	c	a*	a*	b	a*	b*	b	a*	5