National Center for Biotechnology Information NCBI NLM MEDLINE gel humans pubmed abstract nih national institutes of health national library of medicine research support non-u.s. gov't adult DNA Sequence Analysis Genotype drug resistance bacterial* bacterial typing techniques microbial sensitivity tests anti-bacterial agents / pharmacology* streptococcus pyogenes / isolation & purification serotyping electrophoresis pulsed-field macrolides / pharmacology* streptococcus pyogenes / drug effects* bacterial / genetics streptococcal infections / microbiology* streptococcus pyogenes / classification* cluster analysis portugal dna fingerprinting streptococcus pyogenes / genetics investigators=[] affs=[]) pmid:19046174 doi:10.1111/j.1469-0691.2008.02104.x c silva-costa f r pinto collabauthor(name='portuguese surveillance group for the study of respiratory pathogens' lincosamides / pharmacology streptogramin b / pharmacology