1. Volume 381, Issue 9862, Pages 214-222 (January 2013)
Effectiveness of the ten-valent pneumococcal Haemophilus influenzae protein D conjugate vaccine (PHiD-CV10) against invasive pneumococcal disease: a cluster randomised trial 
Dr Arto A Palmu, MD, Jukka Jokinen, PhD, Dorota Borys, MD, Heta Nieminen, MD, Esa Ruokokoski, MSc, Lotta Siira, MSc, Taneli Puumalainen, MD, Patricia Lommel, MSc, Marjan Hezareh, PhD, Marta Moreira, MD, Lode Schuerman, MD, Terhi M Kilpi, MD 
The Lancet 
Volume 381, Issue 9862, Pages (January 2013)
DOI: /S (12)
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2. Figure
Trial profile
There were 78 randomised clusters (ratio 2:2:1:1). *Three participants were not randomly assigned nor vaccinated. †Includes one participant withdrawn from the register follow-up during the masked follow-up period.
The Lancet  , DOI: ( /S (12) )
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