Chad

Author: Ministère de la Santé Publique et de la Solidarité Nationale, Tchad

Author: M. Schlumberger, F. Mireux, S. G. Tchang, D. Mboutbogol, D. O. Cheikh, A. A. Hissein, B. O. Youssouf, M. M. Brahimi, Y. Gamatié

Author: Toguina Madjiade, Daniel Weibel, Mahamat Abdoulaye, Jakob Zinsstag, Jan Hattendorf, Jürg Utzinger, Bassirou Bonfoh, Esther Schelling

Author: Richard Mihigo, Mable Carole Tevi-Benissan, Felicitas Zawaira, Bartholomew Dicky Akanmori, Alain Nyembo Poy, Blanche-philomene Melanga Anya, Kinuam Leon Mbulu, Edna Moturi, Joseph Okeibunor, Teka Aschalew

Author: M. Teresa Aguado, Luis Jodar, Dan Granoff, Regina Rabinovich, Costante Ceccarini, Gordon W. Perkin