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. 2021 Dec 31;2021:7545091. doi: 10.1155/2021/7545091

Table 2.

Quality assessment of literature.

Authors Year Selection Comparability Exposure Score
A B C D E F G H
Zelnak 2015 ☆☆ 7
Mayer 2015 7
Gonzalez 2015 7
Cynthia 2015 6
Bear 2015 7
Ko 2015 6
Liu 2015 6
Taher 2015 8
Groheux 2016 ☆☆ 6
Shani 2016 7
Cynthia 2016 7
Li 2016 7
Zhang 2016 7
Shao 2016 6
Choi 2017 ☆☆ 7
Bignon 2017 7
Bignon 2017 6
Biswas 2017 ☆☆ 6
Viala 2018 6
Sharma 2018 7
Gass 2018 6
Resende 2019 6
Laura 2020 ☆☆ 7
Esgueva 2020 8
Hong 2020 7