Recommendations for Performing Spirometry Rocío García-García; Maria Angeles Gimeno Peribáñez; M. Salomé Albi Rodríguez; Carlos Almonacid Sánchez; Xavier Alsina Restoy; Carlos E. Aguirre-Franco; Anna Balañá Corberó; Eusebi Chiner; Marta Díaz López; Ramón Fernández Álvarez; Mirella Gaboli; Francisco García-Río; Raúl Godoy Mayoral; Saray González Troiteiro; Miguel Angel Hernandez Mezquita; Juana Mª Martinez Llorens; María Celeste Marcos; Carlos Martín; Ingrid Solanes; Francisco Ortega Ruiz; Sandra Peña; Luis Puente; Marcel J. Rodríguez; Juan Luis Rodríguez Hermosa; Yolanda Torralba García; Laura Vigil Giménez;

Severe asthma unresponsive to therapy as the initial presentation of pulmonary venous drainage obstruction Clara Seghers Carreras; Miguel Jiménez-Gómez; Rocío Magdalena Díaz-Campos;

Stability of Asthma Biomarkers Over a Two-year Period Using Three Distinct Classifications in the MEGA Cohort Diana Betancor; Manuel Jorge Rial; José María Olaguibel; Victoria Del Pozo; María José Alvarez Puebla; Ebymar Arismendi; Blanca Barroso; Irina Bobolea; Blanca Cárdaba; Jose Antonio Cañas; Javier Domínguez-Ortega; Astrid Crespo-Leshman; María Jesús Cruz; Alberto Garcia de la Fuente; Francisco-Javier González-Barcala; Jose Antonio Luna-Porta; Carlos Martínez-Rivera; Joaquim Mullol; Xavier Muñoz; Vicente Plaza; Santiago Quirce; Lorena Soto-Retes; Marcela Valverde-Monge; Joaquin Sastre;