Hausdorff, WP Yothers, G Dagan, R Kilpi, T Pelton, SI and Cohen, R Jacobs, MR Kaplan, SL Levy, C Lopez, EL and Mason, EO Syriopoulou, V Wynne, B Bryant, J, Multinational study of pneumococcal serotypes causing acute otitis media
in children, The Pediatric Infectious Disease Journal, (21), 1008-1016, 2002, Lippincott, Williams & Wilkins, 0891-3668, 1532-0987