@ARTICLE{10665-213736, author = {World Health Organization}, journal = {Weekly Epidemiological Record = Relevé épidémiologique hebdomadaire}, title = {Weekly Epidemiological Record, 1963, vol. 38, 20 [full issue]}, volume = {38}, year = {1963}, number = {20}, type = {Journal / periodical articles}, pages = {245 - 255} }