@ARTICLE{10665-227941, author = {World Health Organization}, journal = {Weekly Epidemiological Record = Relevé épidémiologique hebdomadaire}, title = {Weekly Epidemiological Record, 1991, vol. 66, 10 [full issue]}, volume = {66}, year = {1991}, number = {10}, type = {Journal / periodical articles}, pages = {65 - 72} }