Aufsatz(elektronisch)#111. April 2012
Supplementary polio immunization activities and prior use of routine immunization services in non-polio-endemic sub-Saharan Africa
In: Bulletin of the World Health Organization: the international journal of public health = Bulletin de l'Organisation Mondiale de la Santé, Band 90, Heft 7, S. 495-503
ISSN: 1564-0604