@ARTICLE{10665-215854, author = {World Health Organization}, journal = {Weekly Epidemiological Record = Relevé épidémiologique hebdomadaire}, title = {Weekly Epidemiological Record, 1967, vol. 42, 04 [full issue]}, volume = {42}, year = {1967}, number = {04}, type = {Journal / periodical articles}, pages = {45 - 56} }