Late Breaking Abstract - Long-term variability of blood eosinophils in COPD patients by GOLD 2017 staging, and gender bias - Soriano, Joan B; Pastor-Sanz, Maria T; Garcia-Castillo, Elena; Vazquez, Emma; Mar Gomez-Punter, Rosa; Alonso, Tamara; Ancochea, Julio (EUROPEAN RESPIRATORY JOURNAL, 2018)