Epidemiology Biostatistics and Public Health, Vol 15, Iss 2 (2018) Epidemiology, biostatistics, and public health, 15(2):e12926 Epidemiology, Biostatistics, and Public Health; V. 15 N. 2 (2018) Epidemiology, Biostatistics, and Public Health; Vol. 15 No. 2 (2018)