Drupal-Bibcite0<style face="normal" font="default" size="100%">Persistent onchocerciasis after 24 years of ivermectin mass treatment in the Democratic Republic of the Congo: a cross-sectional analytical study</style><style face="normal" font="default" size="100%">Persistent onchocerciasis after 24 years of ivermectin mass treatment in the Democratic Republic of the Congo: a cross-sectional analytical study</style>