TY - JOUR DP - http://iris.who.int/ DB - WHO IRIS EP - 84 AU - World Health Organization LA - en LA - fr UR - https://iris.who.int/handle/10665/231456 JF - Weekly Epidemiological Record = Relevé épidémiologique hebdomadaire DA - 2001 PY - 2001 IS - 11 SP - 77 TI - Weekly Epidemiological Record, 2001, vol. 76, 11 [full issue] VL - 76 ER -