Mallol, Javier, Carlos Riquelme, Viviana Aguirre, Marcela Martínez, Alejandro Gallardo, Carlos Sánchez, and Pablo Córdova. 2020. “Value of Bronchial Reversibility to Salbutamol, Exhaled Nitric Oxide and Responsiveness to Methacholine to Corroborate the Diagnosis of Asthma in Children”. Allergologia Et Immunopathologia 48 (3): 214-22. https://www.all-imm.com/index.php/aei/article/view/220.