Assessment of anthelmintic efficacy of mebendazole in school children in six countries where soil-transmitted helminths are endemic. oleh Bruno Levecke, Antonio Montresor, Marco Albonico, Shaali M Ame, Jerzy M Behnke, Jeffrey M Bethony, Calvine D Noumedem, Dirk Engels, Bertrand Guillard, Andrew C Kotze, Alejandro J Krolewiecki, James S McCarthy, Zeleke Mekonnen, Maria V Periago, Hem Sopheak, Louis-Albert Tchuem-Tchuenté, Tran Thanh Duong, Nguyen Thu Huong, Ahmed Zeynudin, Jozef Vercruysse