Table 2. The risk assessment of the included studies.

 

First Author	Year	Selection				Comparability	Outcome			Total Scores
		Representative-ness of the exposed cohort	Selection of the non-exposed cohort	Ascertainment of exposure	Outcome of interest was not present at start of study	Comparability of cohorts on the basis of the design or analysis	Assessment of outcome	Follow-up long enough for outcomes to occur	Adequacy of follow up of cohorts
Ahmet Murat Aydin	2022	*	*	*	*	*	*	*	*	8
David D’. Andrea	2022	*	*	*	*	*	*	*	*	8
Hiten D. Patel	2022	*	*	*	*	*	*	*		7
Karin Holmsten	2022	*	*	*	*	*	*	*		7
Matteo Ferro	2021	*	*	*	*	*	*	*	*	8