%0 Journal Article %T Methylxanthine use for acute asthma in the emergency department in Japan: a multicenter observational study %A Hiroko Watase %A Kohei Hasegawa %A Koichiro Gibo %A Tadahiro Goto %A Yusuke Hagiwara %A the JEANŠ\3 Investigators %J Archive of "Acute Medicine & Surgery". %D 2019 %R 10.1002/ams2.408 %K Acute asthma %K emergency department %K guidelines %K methylxanthine %K multicenter study %K practice variation %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6603322/