A fourth dose of DTPa-IPV vaccine given to 4-6 year old children in Italy and Sweden following primary vaccination at 3, 5 and 11-12 months of age
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| Description | scholarly article by L Nilsson et al published 1 January 2005 in Scandinavian Journal of Infectious Diseases |
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author: Sven Arne Silfverdal Lennart Nilsson |
| Publication date | January 1, 2005 |
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