TY - JOUR DP - http://iris.who.int/ DB - WHO IRIS EP - 212 AU - World Health Organization LA - en LA - fr UR - https://iris.who.int/handle/10665/224549 JF - Weekly Epidemiological Record = Relevé épidémiologique hebdomadaire DA - 1983 PY - 1983 IS - 27 SP - 205 TI - Weekly Epidemiological Record, 1983, vol. 58, 27 [full issue] VL - 58 ER -