What is the best way to diagnose streptococcal pharyngitis?

@article{Goldfarb2002WhatIT,
  title={What is the best way to diagnose streptococcal pharyngitis?},
  author={Johanna Goldfarb},
  journal={Cleveland Clinic journal of medicine},
  year={2002},
  volume={69 2},
  pages={153-4}
}