. "JMIR Mhealth Uhealth" . . "Pf\u00F6rringer, Dominik" . "Eysenbach, Gunther" . "10.2196/19139" . "2020-04-27"^^ . "PMC7187764" . "COVID-19 Mobile Positioning Data Contact Tracing and Patient Privacy Regulations: Exploratory Search of Global Response Strategies and the Use of Digital Tools in Nigeria" . "Ekong, Iniobong" . "Yasaka, Tyler" . . . "Iyawa, Gloria" . . "Chukwu, Martha" . "cc-by" . "Medline; PMC" . "32310817" . . "32310817" . . "Chukwu, Emeka" . .