@ARTICLE{10665-233165, author = {World Health Organization}, journal = {Weekly Epidemiological Record = Relevé épidémiologique hebdomadaire}, title = {Weekly Epidemiological Record, 2006, vol. 81, 31 [full issue]}, volume = {81}, year = {2006}, number = {31}, type = {Journal / periodical articles}, pages = {297 - 308} }