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Open-Access Journal
Minireviews
Basic Study
Marlein Miranda Cona, Yewei Liu, Ting Yin, Yuanbo Feng, Feng Chen, Stefaan Mulier, Yue Li, Jian Zhang, Raymond Oyen, Yicheng Ni 
World J Methodol 6(2):154-162. Published online Jun 26, 2016. doi: 10.5662/wjm.v6.i2.154
Case Control Study
Retrospective Study