This study identifies causal links between a high-PM2. 5 episode in Korea and air pollutants originating from China during a high-PM2. 5 episode that occurred in Korea between February 23 and March 12. 2019. https://www.bekindtopets.com/limited-value-Rx-KBroVet-CA1-potassium-bromide-Chewable-Tablets-for-Dogs-500mg-60-ct-save-more/