Assessment of risk of bias of the non-randomized studies

StudiesAdequate case definitionRepresentativeness of the casesPresence of all important dataAscertainment of outcomeRisk of bias
Zheng, et al. (2019) [5]YesNoYesYesModerate
Robles-Medranda, et al. (2020) [9]YesYesYesYesLow
Kouanda, et al. (2021) [10]YesYesYesYesLow
Bazarbashi, et al. (2020) [11]YesYesYesYesLow
Kozieł, et al. (2019) [12]YesYesYesYesLow
Khoury, et al. (2018) [13]YesYesYesNoModerate
Bhat, et al. (2016) [14]YesNoYesYesModerate
Fujii-Lau, et al. (2015) [15]YesYesYesNoModerate

The protocol for this systematic review will be registered with PROSPERO. PROSPERO ID is 1025880, registered on April 4th, 2025