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Weibel, Daniel and Schelling, Esther and Bonfoh, Bassirou and Utzinger, Jürg and Hattendorf, Jan and Abdoulaye, Mahamat and Madjiade, Toguina and Zinsstag, Jakob (2008) Demographic and health surveillance of mobile pastoralists in Chad: integration of biometric fingerprint identification into a geographical information system. Geospatial health , 3 (1). pp. 113-124. ISSN 1970-7096