1. Failure of penicillin to eradicate group A streptococci during an outbreak of pharyngitis;Gastanaduy;Lancet,1980
2. Efficacy of benzathine penicillin G in group A streptococcal pharyngitis;Feldman,1984
3. The role of the carrier in treatment failures after antibiotic therapy for group A streptococci in the upper respiratory tract;Kaplan;J Lab Clin Med,1981
4. Reagents, strains and miscellaneous test procedures;Paik,1980
5. Use of penicillin-gradient and replicate plates for the demonstration of tolerance to penicillin in streptococci;Kim;J Infect Dis,1983