Plastic Bronchitis Type 1 as a Respiratory Manifestation of a Lupus-Scleroderma-Type Connective Tissue Disease with Autoantibodies in an Indeterminate Range. Respirar [Internet]. 2026 Sep. 1 [cited 2026 Sep. 1];18(3). Available from: https://respirar.alatorax.org/index.php/respirar/article/view/411