Boosting teenagers with acellular pertussis vaccines containing recombinant or chemically inactivated pertussis toxin: A randomized clinical trial by Blanchard Rohner, G, Chatzis, O, Chinwangso, P, Rohr, M, Grillet, S, Salomon, C, Lemaître, B, Boonrak, P, Lawpoolsri, S, Clutterbuck, E, Poredi, I, Wijagkanalan, W, Spiegel, J, Pham, H, Viviani, S, Siegrist, C