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Spontaneous pneumomediastinum and subcutaneous emphysema associated with bronchospasm in a woman with no history of asthma. Rev Alerg Mex [Internet]. 2017 Oct. 16 [cited 2026 Sep. 23];64(3):386-9. Available from: https://www.revistaalergia.mx/ojs/index.php/ram/article/view/262