Epidemiology, Biostatistics, and Public Health; V. 14 N. 1 (2017) Epidemiology, Biostatistics, and Public Health; Vol. 14 No. 1 (2017) Epidemiology Biostatistics and Public Health, Vol 14, Iss 1 (2017) Epidemiology, Biostatistics and Public Health; Vol 14, No 1 (2017)