Malvisi L, Taddei L, Yarraguntla A, Wilkinson TMA, et al. Sputum sample positivity for Haemophilus influenzae or Moraxella catarrhalis in acute exacerbations of chronic obstructive pulmonary disease: evaluation of association with positivity at earlier stable disease timepoints. Respir Res 2021;22:67.
PMID: 33627095