"Organ transplantation" . "An open-label, randomized clinical trial assessing immunogenicity, safety and tolerability of pandemic influenza A/H1N1 MF59-adjuvanted vaccine administered sequentially or simultaneously with seasonal virosomal-adjuvanted influenza vaccine to paediatric kidney transplant recipients" . "Adjuvants" . "Research methods" . . "Virology" . "Design of experiments" . "Vaccines" . "Evidence-based practices" .