Martine Debacker*, Julia Aguiar†, Christian Steunou†, Claude Zinsou*†, Wayne M. Meyers‡, Augustin Guédénon§, Janet T. Scott*, Michèle Dramaix¶, and Françoise Portaels*
Author affiliations: *Institute of Tropical Medicine, Antwerp, Belgium; †Centre Sanitaire et Nutritionnel Gbemoten, Zagnanado, Benin; ‡Armed Forces Institute of Pathology, Washington, DC, USA; §Ministère de la Santé, Cotonou, Benin; ¶Ecole de Santé Publique, Brussels, Belgium
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