Pneumococcal Serotypes before and after Introduction of Conjugate Vaccines, United States, 1999–20111
Sandra S. Richter , Kristopher P. Heilmann, Cassie L. Dohrn, Fathollah Riahi, Daniel J. Diekema, and Gary V. Doern
Author affiliations: Cleveland Clinic, Cleveland, Ohio, USA (S.S. Richter); University of Iowa Carver College of Medicine, Iowa City, Iowa, USA (K.P. Heilmann, C.L. Dohrn, F. Riahi, D.J. Diekema, G.V. Doern)
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