in 11 general practice offices , with a total of 29 general practitioners , throat swabs from 468 patients with acute pharyngotonsillitis were assayed for group a streptococci with a commercial antigen detection test kit ( culturette brand ten-minute group a strep id ; marion scientific , div . of marion laboratories , inc. , kansas city , mo 64114 , usa ) .
C0022497
kansas
C0041703
usa