Serum MMP3 and IL1-RA levels may be useful biomarkers for detecting asthma and chronic obstructive pulmonary disease overlap in patients with asthma oleh Kazufumi Takada, MD, Maho Suzukawa, MD, PhD, Hiroyuki Tashimo, MD, PhD, Nobuharu Ohshima, MD, PhD, Yuma Fukutomi, MD, PhD, Nobuyuki Kobayashi, MD, Masami Taniguchi, MD, PhD, Masaki Ishii, MD, PhD, Masahiro Akishita, MD, PhD, Ken Ohta, MD, PhD