Vaccine
http://www.sciencedirect.com/science/journal/0264410X
Volume 29, Issue 38 pp. 6427-6720 (2 September 2011)

Meeting Report
WHO Working Group discussion on revision of the WHO recommendations for the production and control of poliomyelitis vaccines (oral): TRS Nos. 904 and 910. Report of Meeting held on 20–22 July 2010, Geneva, Switzerland
Pages 6432-6436
Javier Martin, Catherine Milne, Philip Minor, Konstantin Chumakov, Maria Baca-Estrada, Jacqueline Fournier Caruana, Tiequn Zhou