title: Geographic variation in penicillin resistance in Streptococcus pneumoniae: selected sites, United States, 1997.
authors.affiliation: Department of Emergency Medicine, Maricopa Medical Center, Phoenix, AZ, USA.
authors.forename: B D
authors.initials: BD
authors.lastname: Paterick
authors.forename: C V
authors.initials: CV
authors.lastname: Pollack
mesh_terms: D006801:Humans; D008826:Microbial Sensitivity Tests; D010403:Penicillin Resistance; D011008:Pneumococcal Infections / Q000188:drug therapy* / Q000453:epidemiology / Q000382:microbiology; D011159:Population Surveillance; D013296:Streptococcus pneumoniae / Q000187:drug effects*; D014481:United States