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Open-Access Journal
Review
Basic Study
Case Control Study
Yosuke Sasaki, Fumiya Komatsu, Naoyasu Kashima, Takahiro Sato, Ikutaka Takemoto, Sho Kijima, Tadashi Maeda, Takamasa Ishii, Taito Miyazaki, Yoshiko Honda, Nagato Shimada, Yoshihisa Urita 
World J Clin Cases 7(12):1393-1402. Published online Jun 26, 2019. doi: 10.12998/wjcc.v7.i12.1393
Retrospective Study
Observational Study
Systematic Reviews
Christos Koutserimpas, Stylianos G Zervakis, Sofia Maraki, Kalliopi Alpantaki, Argyrios Ioannidis, Diamantis P Kofteridis, George Samonis 
World J Clin Cases 7(12):1430-1443. Published online Jun 26, 2019. doi: 10.12998/wjcc.v7.i12.1430
Meta-Analysis
Case Report
Wojciech Figiel, Marcin Morawski, Michał Grąt, Oskar Kornasiewicz, Grzegorz Niewiński, Joanna Raszeja-Wyszomirska, Maciej Krasnodębski, Arkadiusz Kowalczyk, Wacław Hołówko, Waldemar Patkowski, Krzysztof Zieniewicz 
World J Clin Cases 7(12):1467-1474. Published online Jun 26, 2019. doi: 10.12998/wjcc.v7.i12.1467