The purpose of this study is to evaluate the safety, reactogenicity and immunogenicity of GSK Biologicals' Hib-MenCY-TT (MenHibrix®) vaccine co-administered with Rotarix, Prevnar 13 and Havrix as compared to PedvaxHIB co-administered with Rotarix, Prevnar 13 and Havrix in infants and toddlers.