Neonatal pneumococcal conjugate vaccine immunization primes T cells for preferential Th2 cytokine expression: a randomized controlled trial in Papua New Guinea - van den Biggelaar, A.; Richmond, P.; Pomat, W.; Phuanukoonnon, S.; Nadal-Sims, M.; Devitt, C.; Siba, P.; Lehmann, Deborah; Holt, P. (Elsevier, 2009)