Takane, M.; Yabe, S.; Tateshita, Y.; Kobayashi, Y.; Hino, A.; Isono, K.; Okayasu, H.; Diop, O. M.; Tadono, T. Satellite Imagery Technology in Public Health: Analysis of Site Catchment Areas for Assessment of Poliovirus Circulation in Nigeria and Niger. Geospat Health 2016, 11.