Sputum interleukin‐13 as a biomarker for the evaluation of asthma control. Issue 11 (November 2016) - Tsilogianni, Z.; Hillas, G.; Bakakos, P.; Aggelakis, L.; Konstantellou, E.; Papaioannou, A. I.; Papaporfyriou, A.; Papiris, S.; Koulouris, N.; Loukides, S.; Kostikas, K.