Fig. 1From: Association of airborne particles, protein, and endotoxin with emergency department visits for asthma in Kyoto, JapanNumber of emergency department visits for asthma at Rakuwakai Otowa Hospital in Kyoto. The study period (September 2014 to May 2016) was divided into autumn (September to November), winter (December to February), spring (March to May), and summer (June to August)Back to article page