Hai-Yen Sung, Ph.D.
Hai-Yen Sung, Ph.D.
![142nd APHA Annual Meeting and Exposition (November 15 - November 19, 2014): http://www.apha.org/events-and-meetings/annual](images/banner.jpg)
Professor of Health Economics
University of California, San Francisco
San Francisco,
CA
USA
hai-yen.sung@ucsf.edu
2055.0 Secondhand smoke exposure is still associated with emergency department use among children and adolescents with asthma