“Antibody Deficiencies With Normal IgG in Adults With Non-Cystic Fibrosis Bronchiectasis or Recurrent Pneumonia: Cross-Sectional Study”. Colombia Medica 53, no. 2 (July 12, 2022): e2014832. Accessed December 30, 2025. https://colombiamedica.univalle.edu.co/index.php/comedica/article/view/4832.