2013-07-02
苏格兰卫生防护部(HPS,Health Protection Scottish)
2011-01-01
美国儿科学会(AAP,American Academy of Pediatrics)
2010-12-01
2010-04-01
英国健康保护局(HPA,Health Protection Agency)
2010-03-01
美国疾病控制与预防中心(CDC,Centers for Disease Control and Prevention)