ArchiveVolume 5, Issue 2, June 2020
Mamadou Makhtar Mbacké Leye, Ibrahima Seck, Anta Tal Dia
Pages: 30-36     Published Online: Apr. 14, 2020
DOI: 10.11648/j.wjph.20200502.11        Views 101      Downloads 44
Cancheng Zhang, Mengying Deng
Pages: 37-41     Published Online: May 28, 2020
DOI: 10.11648/j.wjph.20200502.12        Views 5      Downloads 4
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